VNTRs are useful in DNA forensics because ________. a. the VNTRs act as an identifier for...

VNTRs are useful in DNA forensics because ________.

a. the VNTRs act as an identifier for a group of individuals

b. the VNTRs have very little variation in length

c. the VNTRs have exactly the same sequence between people

d. the number of VNTRs varies between people

Expert Solution

Answer- d. The number of VNTRs varies between people.

Explanation- VNTRs are the variable number of tandem repeats. They are the sequence of repeatitive DNA present in the genome. These are also termed as mini satellites. This VNTRs play an important role in order to differentiate between two people. They differ in the length between the people. At first, through PCR collected DNA sample is amplified and then with help of restriction endonuclease enzyme they cut at the VNTRs. As every human being has its unique DNA. Then VNTRs should also be unique and differ in length. This is how they are useful in DNA forensics.

So, option d is correct answer.

VNTRs acts as to identify a single individual, not the group of individual as VNTRs differ in length in every people. So, option A is incorrect.

It greatly differs in length. So, there is no little variation. So, option B is incorrect.

VNTRs don't have the same sequence throughout the all people. So, option C is incorrect.

gladiator answered 11 months ago

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