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Why was it difficult to use DNA as evidence in a crime pcr was invented?
you need many copies of DNA for DNA fingerprinting
Biochemical analysts use similarities in what as evidence for evolutionary relationships?
Biochemical analysts use similarities in molecules like DNA, proteins, and enzymes as evidence for evolutionary relationships. The more similarities there are between the molecules of different organisms, the closer their evolutionary relationship is believed to be.
How do scientist use DNA to determine the origin of today's American dogs?
The scientists take the DNA to the lab to determine the origin of some of the modern American dogs.
Do you think DNA fingerprinting is good evidence for solving crimes. why or why not?
Yes, DNA fingerprinting is a powerful tool for solving crimes because it can definitively link a suspect to a crime scene or victim. DNA evidence is scientifically reliable and has high accuracy, which can help prosecutors secure convictions or help exonerate innocent suspects. However, it is important to consider the chain of custody and proper handling of DNA samples to ensure the integrity of the evidence.
Why was it difficult to use DNA as evidence before PCR was invented?
Before the invention of polymerase chain reaction (PCR), using DNA as evidence was challenging because DNA samples were often limited in quantity and could degrade over time. Traditional DNA analysis methods required larger amounts of intact DNA, making it difficult to extract usable information from trace evidence, such as blood or hair. Additionally, the techniques available at the time were not sensitive or efficient enough to detect and analyze the small amounts of DNA that could be obtained. PCR revolutionized this by allowing the amplification of specific DNA segments, enabling reliable analysis from minimal samples.
Why was it difficult to use DNA as evidence in a crime pcr was invented?
you need many copies of DNA for DNA fingerprinting
Why was it difficult to use DNA as evidence in a crime before PCR was inventes?
you need many copies of DNA for DNA fingerprinting
Why was it difficult to use DNA as evidence in a crime before PCR was invented?
you need many copies of DNA for DNA fingerprinting
How DNA use in real life?
DNA has many uses in real life. These uses may include use as evidence in a crime scene for example
How reliable is DNA fingerprinting?
It is not infallable, but it is considered reliable enough to be use as evidence.
What commission was formed in 1998 to ensure the effective use of DNA as a crime fighting tool?
National Commission on the Future of DNA Evidence
How is DNA use as Evidence?
They compare the DNA of those found at the scene of the crime against any suspect. This can be achieved by using Electrophoresis.
What are the arguments for and against DNA evidence?
There are many arguments for and against DNA evidence. One argument is that it cannot be disproved as deciding evidence.
What are three things forensic scientists use DNA fingerprinting for?
iDENTIFING RELATIONSHIPS, CORSPES, EVIDENCE.
Why is it difficult to use DNA as evidence in a crime before PCR was invented?
Before PCR was invented, it was difficult to use DNA as evidence in a crime because traditional methods required a large amount of DNA sample, which may not have been available or may have been contaminated. This made it challenging to obtain reliable DNA profiles for comparison. Additionally, the older techniques were more time-consuming and less sensitive than PCR, making the process of analyzing DNA evidence slower and less accurate.
How do forensic scientists use DNA?
Forensic scientists use DNA analysis to identify individuals, solve crimes, and establish paternity. They compare DNA samples from crime scenes or suspects with samples from victims or relatives to make matches and draw conclusions about the evidence. DNA can provide crucial evidence in criminal investigations by linking individuals to crimes through biological material such as blood, saliva, or hair.
Why do investigators use DNA instead of other physical evidence?
Because DNA is unique to each person so it can be used to kinda say they were definatly involvd cos it couldn't be anyone else's DNA
