Key factor in DNA profiling is ______
a) sequence of nucleotides
b) DNA isolation
c) VNTR
d) RFLP
Answers
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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.
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Answer:
VNTRs.
Explanation:
DNA profiling may be defined as the method of determining the individual's DNA variation as compared with other's DNA. This is also known as DNA fingerprinting.
Variable number of tandem repeats are the short nucleotide sequences. These differ vary among all the individuals and make their DNA unique from other organism. VNTRs are the key factor in DNA profiling as they are not similar among the organisms.
Thus, the correct answer is option (b).
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