Dear Science Bloggers,
Your task today is to pair up and discuss about the questions
given below and post your comments.
In Forensics, DNA can help to solve crimes or find missing or
unknown family members.
DNA can be extracted from many types of cells.
1. How is DNA extracted?
2. How do you think it is used in medicine?
3. Suggest advantages of DNA Profiling.
4. Evaluate the use of a national DNA database. What do you
think are its pros and cons?
Ans-1) Cellular and histone proteins bound to the DNA can be removed either by adding a protease or by having precipitated the proteins with sodium or ammonium acetate, or extracted them with a phenol-chloroform mixture prior to the DNA-precipitation.
ReplyDeleteAns-2) Studies in bacteria and bacterial viruses have led to methods to manipulate and recombine DNA in unique and reproducible ways and to amplify these recombined molecules millions of times. Once properly identified, the recombinant DNA molecules can be used in various ways useful in medicine and human biology. There are many applications for recombinant DNA technology. Cloned complementary DNA has been used to produce various human proteins in microorganisms. Insulin and growth hormone have been extensively and successfully tested in humans and insulin has been licensed for sale. Mass production of bacterial and viral antigens with recombinant DNA technology is likely to provide safe and effective vaccines for some disorders for which there is no prevention. The cloned probes for the human α- and β-globin loci, for specific disease genes, such as the Z allele of α-antitrypsin, and for random genomic sequences are proving useful for prenatally diagnosing human genetic disorders and preventing their clinical consequences.
Ans-3) Some of the advantages of DNA profiling include:
-DNA tests can be applied to any human sample that contains cells with nuclei, such as saliva, semen, urine and hair.
-DNA tests are extremely sensitive, and can be conducted using samples that would be too small for other serological tests.
-DNA is hardy, and resists degeneration even after contamination with chemicals or bacteria.
-The ability of DNA profiling to exclude a suspect means the police are able to confidently drop that line of enquiry and continue their investigation down other avenues.
Ans-4) Pros- The time and money saved through identifying suspects quickly through DNA evidence greatly outweighs the financial expense of keeping a DNA database.
- Having a larger database that covers the whole population is far more useful and cost effective than a smaller one that only covers a small number of individuals.
Cons- Maintaining a DNA database is hugely expensive. The staff, facilities and equipment used to process and manage DNA samples costs large amounts of money.
- Expanding the DNA database to include a DNA sample from everyone in the country would require a lot of additional investment of taxpayers money.
By Mohamed Shaqeel Sourjah and Angelo Gerald Timbol 8-B
Guudos boys! A very good descriptive answers on the advantages of DNA profiling and database.
DeleteKeep posting shaqeel and angelo.
1A: Its done through samples taken from any part of the body. IE.hair, skin.
ReplyDelete2A: Its used to research the effects of experimental drugs on DNA and find possible cures.
3A: With DNA profiling you can find out who that person is and you can also find out any possible diseases the person can or is getting and start curing it.
4A: The national DNA database stores the dna codes and the person related to it. With this you can know who a person is by just getting a part of their body. However you can also steal dna codes or mess with them which is really bad. Yet its usually secured well.
Good start blake! keep posting !
ReplyDelete1.DNA is extracted from samples from different part of any living organism e.g. Hair,fingernail,saliva.
ReplyDelete2.It is used in medicine for research purposes in the fields of testing in different drugs, seeing its effects and then finding out cures for it.
DNA Profiling Advantages:
paternity - to find out if the alleged father is actually the biological father of the child
twins - identical twins share the same genetic material, while fraternal (non identical) twins develop from two eggs fertilised by two sperm and are no more alike than individual siblings born at different times. It can be difficult to tell at birth whether twins are identical or fraternal
siblings - for example, adopted people may want to have DNA tests to make sure that alleged biological siblings are actually their blood brothers or sisters
immigration - some visa applications may depend on proof of relatedness
criminal justice - DNA testing can help solve crimes by comparing the DNA profiles of suspects to offender samples. Victorian law allows the collection of blood and saliva samples from convicted criminals and suspects. DNA profiles are then kept on a database.
3.DNA DATABASE:
ARGUMENTS FOR:
A DNA database covering the whole population and every visitor to the UK, as advocated by Lord Justice Sedley, would save massive amounts of police time and help clear up crimes faster.
Those who do nothing wrong have nothing to fear and should be reassured.
The current system - the DNA of all those arrested for recordable offences, guilty or not, is retained - is selective and inefficient.
Current practice is unfair: ethnic minorities and young people are over-represented, creating resentment and anti-police feeling. Two-in-five black men have their DNA on record, as against fewer than one-in-ten whites.
The world has changed: international mobility means that potential terrorists can come and go, often on false papers.
ARGUMENTS AGAINST:
It would be the ultimate step on the road to a 'Big Brother' state: Britain would become 'a nation of suspects'.
Whatever the utility of DNA samples, there is something inherently disturbing about entering every baby on a database at birth.
A national DNA bank would be massively expensive and bureaucratic.
It would be damaging to the image of the UK - 'Welcome to Britain: now provide a mouth swab'.
DNA information could be abused by corrupt police and others illegally passing information to unauthorised people.
Well done Ariel! Good Analysis done1
Delete1A)Cellular and histone proteins bound to the DNA can be removed either by adding a protease or by having precipitated the proteins with sodium or ammonium acetate, or extracted them with a phenol-chloroform mixture prior to the DNA-precipitation.
ReplyDelete2A)It has been argued that the discovery of DNA as well as our understanding of its structure and functioning may well be the most important discovery of the last century. The effect of the discovery of DNA on scientific and medical progress has been enormous, whether it involves the identification of our genes that trigger major diseases or the creation and manufacture of drugs to treat these devastating diseases. In fact, the identification of these genes and their subsequent analysis in terms of therapeutic treatment has ultimately influenced science and will continue to do so in the future.
3A)Advantages
Can be used to help determine biological relationship, such as who a child's father is,
Can be used to, beyond a reasonable doubt, prove a person was present during criminal activity,
Can be used, to a degree, to determine the likely-hood that an individual will contract certain diseases or cancers,
Can be used to identify dead bodies that can't be recognized in other ways,
Is fairly conclusive.
Good Job Magdi!
Delete1)How is DNA extracted?
ReplyDeleteDNA can be found at the specific location in the form of a hair sample or fingernail.
2)How do you think it is used in medicine?
Scientists has created amazing proteins that can copy synthetic genetic material – the so-called XNA (Xeno-Nucleic Acids). This can replace damaged DNA strands.
3)Suggest advantages of DNA Profiling.
Can be used to help determine biological relationship, such as who a child's father is,
Can be used to, beyond a reasonable doubt, prove a person was present during criminal activity,
Can be used, to a degree, to determine the likely-hood that an individual will contract certain diseases or cancers,
Can be used to identify dead bodies that can't be recognized in other ways
4)Evaluate the use of a national DNA database. What do you think are its pros and cons?
DNA database covers the whole population and every visitor to the UK would save massive amounts of police time and help clear up crimes faster. However, DNA databases are highly expensive and will take a very long time to structure.
Good work Sharafath!
Delete1)You take samples from animals and humans DNA
ReplyDelete2)it is used to define experimental drugs on DNA and find possible number of cures.
3)you find out who this person is or which family this person belongs to.
4)DNA profiling keeps a record of a person and you can identify the person from it's any of the body part
Good start Huzaifa! Keep posting more ...
DeleteAnswer 1: DNA can be extracted by taking samples any part of the body for example by adding protease.
ReplyDeleteAnswer 2: It can be used in finding new cures for unknown diseases. Although studying about bacteria and other viruses led us to finding new methods of manipulating and recombining the DNA.
Answer 3: DNA gives us many advantages in our lives for example it helps us find the way of a disease or even identify the unknown person. DNA helps police in getting evidences of crime. Overall DNA is very helpful and has many advantages in different categories.
Answer 4: The National DNA database stores every DNA code with the person the DNA belongs to. It is very useful because we are able to find a particular person and everything about him/her. However the bigger DNA database the more costly it is to keep it. It is very expensive to pay for all the facilities.
Done by: Barbara Gajda and Umama Rizwan
Nice and crisp Barbara!
Delete1. Cellular and histone proteins bound to the DNA can be removed either by adding a protease or by having precipitated the proteins with sodium or ammonium acetate, or extracted them with a phenol-chloroform mixture prior to the DNA-precipitation
ReplyDelete2. •Cloned complementary DNA has been used to produce various human proteins in microorganisms
• Mass production of bacterial and viral antigens with recombinant DNA technology is likely to provide safe and effective vaccines for some disorders for which there is no prevention
3.
paternity - to find out if the alleged father is actually the biological father of the child
twins - identical twins share the same genetic material, while fraternal (non identical) twins develop from two eggs fertilised by two sperm and are no more alike than individual siblings born at different times. It can be difficult to tell at birth whether twins are identical or fraternal
siblings - for example, adopted people may want to have DNA tests to make sure that alleged biological siblings are actually their blood brothers or sisters
immigration - some visa applications may depend on proof of relatedness
criminal justice - DNA testing can help solve crimes by comparing the DNA profiles of suspects to offender samples. Victorian law allows the collection of blood and saliva samples from convicted criminals and suspects. DNA profiles are then kept on a database.
4. advantages :
A DNA database covering the whole population and every visitor to the UK, as advocated by Lord Justice Sedley, would save massive amounts of police time and help clear up crimes faster.
Those who do nothing wrong have nothing to fear and should be reassured.
The current system - the DNA of all those arrested for recordable offences, guilty or not, is retained - is selective and inefficient.
Current practice is unfair: ethnic minorities and young people are over-represented, creating resentment and anti-police feeling. Two-in-five black men have their DNA on record, as against fewer than one-in-ten whites.
The world has changed: international mobility means that potential terrorists can come and go, often on false
Disadvantages :
It would be the ultimate step on the road to a 'Big Brother' state: Britain would become 'a nation of suspects'.
Whatever the utility of DNA samples, there is something inherently disturbing about entering every baby on a database at birth.
A national DNA bank would be massively expensive and bureaucratic.
It would be damaging to the image of the UK - 'Welcome to Britain: now provide a mouth swab'.
DNA information could be abused by corrupt police and others illegally passing information to unauthorised people.
Detailed explanation of the topic Rana! Excellent!
DeleteDNA is extracted using Protease or precipitates (chemical types) and adding sodium Or ammonium accetate (chemical compunds)
ReplyDeleteSpecific DNA (a code of DNA that does an opposite effect of the disease or medical issue) is usually used in syringes to implant a code of DNA to reverse the effects of the disease.
The Defense or investigation agencies such as the CIA, use forensic labs to identify the person by using photographs, pieces of thumb prints, hair or any physical properties of the person that are found in the area being investigated. These are mainly used to track down criminals, identify disease, mutations and other family members that are being used for evidence out of suspicion and other sources that support the situation. However, these codes of information can be misused by criminals for the same purpose...
good job! keep posting!
DeleteQ1.
ReplyDeleteCellular and histone proteins bound to the DNA can be removed either by adding a protease or by having precipitated the proteins with sodium or ammonium acetate, or extracted them with a phenol-chloroform mixture prior to the DNA-precipitation.
Q.2
Advances in genetic engineering influence to an increasing extent a number of medical disciplines. DNA analysis can be used in the diagnosis of hereditary diseases, in investigations of malignant processes, in forensic medicine and for detection of infectious pathogens. Two main methodical approaches to DNA analysis, Southern's method and procedures based on primer directed enzymatic amplification of DNA by the PCR method, resolve the complicated detection of slight changes in the vast volume of human genetic information. Cystic fibrosis may serve as an example of a serious hereditary disease the diagnosis of which improved greatly after introduction of DNA analysis. The diagnosis of this disease is nowadays possible by direct analysis of mutations and indirectly by investigations of the link between the disease and DNA polymorphisms.
Q3.
DNA tests can be applied to any human sample that contains cells with nuclei, such as saliva, semen, urine and hair.
DNA tests are extremely sensitive, and can be conducted using samples that would be too small for other serological tests.
DNA is hardy, and resists degeneration even after contamination with chemicals or bacteria.
The ability of DNA profiling to exclude a suspect means the police are able to confidently drop that line of enquiry and continue their investigation down other avenues.
Q4.
1. Those who do nothing wrong have nothing to fear and should be reassured.
2. The current system - the DNA of all those arrested for recordable offences, guilty or not, is retained - is selective and inefficient.
3. Current practice is unfair: ethnic minorities and young people are over-represented, creating resentment and anti-police feeling. Two-in-five black men have their DNA on record, as against fewer than one-in-ten whites.
4. The world has changed: international mobility means that potential terrorists can come and go, often on false papers.
1.Whatever the utility of DNA samples, there is something inherently disturbing about entering every baby on a database at birth.
2. A national DNA bank would be massively expensive and bureaucratic.
3. It would be damaging to the image of the UK - 'Welcome to Britain: now provide a mouth swab'.
4. DNA information could be abused by corrupt police and others illegally passing information to unauthorised people.
Detailed Explanation of DNA technique Gabriel.
Delete1A)Cellular and histone proteins bound to the DNA can be removed either by adding a protease or by having precipitated the proteins with sodium or ammonium acetate, or extracted them with a phenol-chloroform mixture prior to the DNA-precipitation.
ReplyDelete2A)It has been argued that the discovery of DNA as well as our understanding of its structure and functioning may well be the most important discovery of the last century. The effect of the discovery of DNA on scientific and medical progress has been enormous, whether it involves the identification of our genes that trigger major diseases or the creation and manufacture of drugs to treat these devastating diseases. In fact, the identification of these genes and their subsequent analysis in terms of therapeutic treatment has ultimately influenced science and will continue to do so in the future.
3A)Advantages
Can be used to help determine biological relationship, such as who a child's father is,
Can be used to, beyond a reasonable doubt, prove a person was present during criminal activity,
Can be used, to a degree, to determine the likely-hood that an individual will contract certain diseases or cancers,
Can be used to identify dead bodies that can't be recognized in other ways,
1.DNA is extracted from samples from different part of any living organism e.g. Hair,fingernail,saliva.
ReplyDelete2. Disease Diagnosis and Treatment
Paternity and Legal Impact
Forensics important to the field of forensic science. The discovery of DNA has meant that the guilt or innocence of a person .
3. Some of the advantages of DNA profiling include:
DNA tests can be applied to any human sample that contains cells with nuclei, such as saliva and hair.
DNA tests are extremely sensitive, and can be conducted using samples that would be too small for other serological tests.
DNA is hardy, and resists degeneration even after contamination with chemicals or bacteria.
The ability of DNA profiling to exclude a suspect means the police are able to confidently drop that line of enquiry and continue their investigation down other avenues.
4. It helps keep a record of a person, can be used to identify dead bodies, likely hood for disease, give evidence of ones crime.
Marina Ossama and Adeena Kashief
DeleteGood Adeena & Marina. Keep posting on DNA database....
Delete1A)Cellular and histone proteins bound to the DNA can be removed either by adding a protease or by having precipitated the proteins with sodium or ammonium acetate, or extracted them with a phenol-chloroform mixture prior to the DNA-precipitation.
ReplyDelete2A)It has been argued that the discovery of DNA as well as our understanding of its structure and functioning may well be the most important discovery of the last century. The effect of the discovery of DNA on scientific and medical progress has been enormous, whether it involves the identification of our genes that trigger major diseases or the creation and manufacture of drugs to treat these devastating diseases. In fact, the identification of these genes and their subsequent analysis in terms of therapeutic treatment has ultimately influenced science and will continue to do so in the future.
3A)Advantages
Can be used to help determine biological relationship, such as who a child's father is,
Can be used to, beyond a reasonable doubt, prove a person was present during criminal activity,
Can be used, to a degree, to determine the likely-hood that an individual will contract certain diseases or cancers,
Can be used to identify dead bodies that can't be recognized in other ways,
Is fairly conclusive.
Ans 1: Its done by taking samples from the body/corpse. IE.hair, blood.
ReplyDeleteAns 2: Its used to understand the effects of experimental drugs on DNA and Create an effective anntidote to diseases.
Ans 3: DNA profiling helps find out who that person is and you can also find out many possible habits the person had or has or any sorts of illnesses the person could have gotten
Ans 4: The national DNA database stores codes and the corresponding person. With this you can identify a person is by getting a DNA sample. Though it could be tampered with and can interfere in a lot of police work
Good Start Sammy! Keep posting!
DeleteThe DNA is extracted from several sources like hair, semen, solid tissues, blood tissues, blood stains, buccal cells of saliva etc. The extracted DNA is stored in a clean, cool, dry place. In the cells extracted, it may be digested by sodium do decyl sulphate, and the proteins digested by some proteinase enzyme. This is followed by repeated extraction of these with phenol and chloroform to remove cell debris. The obtained DNA is dissolved in a solution. This can be precipitated by addition of alcohol. DNA degradation is specified by staining DNA with ethidium bromide and undergoing agarose gel electrophoresis. The denatured DNA appears as smear whereas those not digested appears as a single band. Since DNA is the blueprint for life, everything living contains DNA. DNA isolation is one of the most basic and essential techniques in the study of DNA. The extraction of DNA from cells and its purification are of primary importance to the field of biotechnology and forensics.Extraction and purification of DNA are the first steps in the analysis and manipulation of DNA that allow scientists to detect genetic disorders, produce DNA fingerprints of individuals, and even create genetically engineered organisms that can produce beneficial products such as insulin, antibiotics, and hormones. The advantages of DNA profiling include: Identification of criminals: The main and most widely used application of DNA profiling is use of the technology to identify criminal. This helps in determining whether the accused is the real culprit or not. Kinship analysis: This method can be use to determine where two or more individual are members of the same family. It is also an important evidence for paternity testing in confirming the parents of a child. PROS 1. It provides more certainty to the case against a defendant. Many crimes boil down to what is considered a he said/she said debate that a jury must decide upon. If DNA evidence is available in that case, the certainty of evidence against a defendant becomes much stronger and can help to make sure guilty parties instead of innocent ones are put behind bars. 2. It helps to keep society safer. With DNA being collected in a database, all samples can be registered and compared to previous samples that have been previously entered. This can help to identify who the perpetrator of a crime might be so that law enforcement officials can get them off the street much more quickly. CONS 1. It could be hacked and the information used for alternative purposes. Anything that is on a database is susceptible to hacking in some form. Hackers could get into the database and manipulate the DNA data to serve their own purposes. Some might even locate the individuals with profiles on the database and blackmail them because of the information they have. 2. Information is stored whenever samples are created. When volunteers offer their DNA to exclude them from a crime, they might not know that their profile may be included on a national database that keeps personal information about them. This means that people who are innocent of a crime might still be treated like a criminal by law enforcement personnel just because their DNA profile has been established.
ReplyDeleteAnswer 1) Cellular and histone proteins bound to the DNA can be removed either by adding a protease or by having precipitated the proteins with sodium or ammonium acetate, or extracted them with a phenol-chloroform mixture prior to the DNA-precipitation.
ReplyDeleteAnswer 2) DNA extraction is one of the most modern of the biological sciences. It is used to diagnose many medical conditions and can also be used for genetic engineering of both plants and animals. DNA extraction can also be used to gather evidence in a crime investigation.
Answer 3) DNA tests can be applied to any human sample that contains cells with nuclei, such as saliva, semen, urine and hair.
DNA tests are extremely sensitive, and can be conducted using samples that would be too small for other serological tests.
DNA is hardy, and resists degeneration even after contamination with chemicals or bacteria.
The ability of DNA profiling to exclude a suspect means the police are able to confidently drop that line of enquiry and continue their investigation down other avenues.
Answer 4) Pros- A DNA database covering the whole population and every visitor to the UK, as advocated by Lord Justice Sedley, would save massive amounts of police time and help clear up crimes faster. Those who do nothing wrong have nothing to fear and should be reassured. The current system - the DNA of all those arrested for record able offences, guilty or not, is retained - is selective and inefficient. Current practice is unfair: ethnic minorities and young people are over-represented, creating resentment and anti-police feeling. Two-in-five black men have their DNA on record, as against fewer than one-in-ten whites. The world has changed: international mobility means that potential terrorists can come and go, often on false papers.
Cons- It would be the ultimate step on the road to a 'Big Brother' state: Britain would become 'a nation of suspects'. Whatever the utility of DNA samples, there is something inherently disturbing about entering every baby on a database at birth. A national DNA bank would be massively expensive and bureaucratic. It would be damaging to the image of the UK - 'Welcome to Britain: now provide a mouth swab'. DNA information could be abused by corrupt police and others illegally passing information to unauthorized people.
1. How is DNA extracted?
ReplyDeleteAns. DNA is extracted from a cell from a part of a living organism by either chemical or physical means.
2. How do you think it is used in medicine?
Ans. The ability to extract and observe DNA can help in the diagnosing of a patient and even develop new vaccines, antibiotics, etc…
3. Suggest advantages of DNA Profiling.
Ans. First we must know what is DNA profiling; it is the use of DNA to identify an individual, by using DNA it is deemed full proof since its almost impossible to find two people with exactly the same DNA.
There are three main advantages:
1. Less Invasive. Taking a DNA sample is less invasive than taking a blood sample.
2. Reducing and Reversing Wrongful Convictions. When used properly and in conjunction with other forensic tools and evidence, the number of wrongful convictions can be reduced
3. Protecting the Innocent. The proper use of DNA profiling can help rule out clear non-matches in paternity cases and crimes in which DNA evidence is present.
4. Evaluate the use of a national DNA database. What do you think are its pros and cons?
Ans. “A national DNA database is a government database of DNA profiles which can be used by law enforcement agencies to identify suspects of crimes.”-https://en.wikipedia.org/wiki/National_DNA_database
By the description above you can see that a national DNA database is a database which contains information about the DNA of people in one nation. This has its pros and its cons:
Pros:
• It can be very reliable in reducing and reversing wrongful convictions.
• It can be used to protect the innocent
• Criminals can be identified by fingerprints, hair and other samples.
Cons:
• People feel like it is a violation of privacy.
• Unauthorized personnel might have access to the database.
• Could be used for the conviction of the innocent.
By: Eyad Abdulazim 8B
Science Blog
ReplyDeleteQ1Ans. Cellular and histone proteins bound to the DNA can be removed either by adding a protease or by having precipitated the proteins with sodium or ammonium acetate, or extracted them with a phenol-chloroform mixture prior to the DNA-precipitation.
Q2Ans.Its used to research the effects of experimental drugs on DNA and find possible cures.
Q3Ans. With DNA profiling you can find out who that person is and you can also find out any possible diseases the person can or is getting and start curing it.
Q4Ans.
The national DNA database stores the dna codes and the person related to it. With this you can know who a person is by just getting a part of their body. However you can also steal dna codes or mess with them which is really bad. Yet its usually secured well.
Its done through samples taken from any part of the body. IE.hair, skin.
ReplyDelete2: Its used to research the effects of experimental drugs on DNA and find possible cures.
3: With DNA profiling you can find out who that person is and you can also find out any possible diseases the person can or is getting and start curing it.
4:The national DNA database stores the dna codes and the person related to it. With this you can know who a person is by just getting a part of their body. However you can also steal dna codes or mess with them which is really bad. Yet its usually secured well.
By Fudail and Hamza
This comment has been removed by the author.
ReplyDelete1.Cellular and histone proteins bound to the DNA can be removed either by adding a protease or by having precipitated the proteins with sodium or ammonium acetate, or extracted them with a phenol-chloroform mixture prior to the DNA-precipitation.
ReplyDelete2.It can be used to analyse diseases and prevent further spread of the disease.
3.immigration - some visa applications may depend on proof of relatedness
criminal justice - DNA testing can help solve crimes by comparing the DNA profiles of suspects to offender samples.
4.A data database stores the DNA of millions of people and can be used to find someone but can be a violation of privacy.
1. DNA is extracted from a cell from a part of a living organism by physical means.
ReplyDelete2. The ability to extract and observe DNA can help in the diagnosing of a patient and even develop new vaccines, antibiotics, etc…
3. There are three main advantages:
a. Less Invasive. Taking a DNA sample is less invasive than taking a blood sample.
b. Reducing and Reversing Wrongful Convictions. When used properly and in conjunction with other forensic tools and evidence, the number of wrongful convictions can be reduced
c. Protecting the Innocent. The proper use of DNA profiling can help rule out clear non-matches in paternity cases and crimes in which DNA evidence is present.
4. A data database stores the DNA of all of the people and can be used to find someone. This has its pros and its cons:
Pros:
• Criminals can be identified by fingerprints, hair and other samples.
Cons:
• People feel like it is a violation of privacy.
• Unauthorized personnel might have access to the database.
ans 1: It is done through collecting strands of hair, a sample of blood or skin tissue from the victim/body/corpse.
ReplyDeleteans 2: it is used to find cures for a sickness
ans 3: you can find the criminal from a crime scene and discover if a a person has a disease and start curing it.
ans 4: The national DNA database stores codes and the corresponding person. With this you can identify a person is by getting a DNA sample. Though it could be tampered with and can interfere in a lot of police work.
By: Ayman Abdul Ghaffar 8D
Ans1 its done by taking samples from the body
ReplyDeleteAns2 its used to understand the effect of the experiment drugs
Ans3 DNA profiling helps finds out who that person and you can his or hers habits
Ans4 the national dna database stores codes and the codes and the corresponding person
DNA-
ReplyDeleteAns1 In crime scenes DNA is extracted by breaking open the cell found in the material found.Ex:Hair,Nails,Blood...
Ans2 DNA molecules can be used in various ways useful in medicine and human biology.
Ex: Developing cures for diseases found in a person's DNA.
Ans3 DNA profiling allows the identification of suspects or witnesses at a crime scene as well as determining biological relationships such as who the persons relatives or parents are.
Ans4 DNA databases are very complex and so take longer times to structure. DNA databases cover the entire nation's population and save time for investigation teams to identify suspects.
By: Nathaniel 8D