MHT CET Biology question

Biology Molecular Basis of Inheritance MHT CET

What is it that forms the basis of DNA fingerprinting?

(A)The relative proportions of purines and pyrimidines in DNA
(B)The relative difference in the DNA occurrence in blood, skin and saliva
(C)The relative amount of DNA in the ridges and grooves of the fingerprints
(D)Satellite DNA occurring as highly repeated short DNA segmentsCorrect

Answer: (D)

Solution

DNA fingerprinting is based on polymorphism in satellite (repetitive) DNA made of highly repeated short segments; purine/pyrimidine proportions are

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Question ID VK-065631