Q.

Which of the following is incorrect about VNTR?

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a

It belongs to a class of satellite DNA called mini satellite.

b

The two alleles of a chromosome always contain same copy numbers of VNTR.

c

Size of VNTR varies from 0.1 to 20 kb.

d

Radio labelled VNTR is used as a probe in southern blot hybridisation.

answer is B.

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Detailed Solution

The VNTR ( variable number of tandem repeats) belongs to class of satellite DNA referred to as mini-satellite. A small DNA sequence is arranged tandemly in many copy numbers. The copy number varies from chromosome to chromosome in an individual.

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