NEET Biology question

Which of the following best describes DNA polymorphism, as relevant to DNA fingerprinting?

(A)It is a measure of the level of gene linkage in a population
(B)It is caused by an inheritable mutation present in a population at a high frequencyCorrect
(C)It is a measure of the proportion of coding DNA in an organism
(D)It occurs only in non-heritable somatic mutations

Answer: (B)

Solution

As stated in NCERT, when an inheritable mutation is observed in a population at a high frequency, it is referred to as DNA polymorphism; such variation (e.g., in VNTR/satellite DNA sequences) between individuals is the basis of DNA fingerprinting,

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Question ID VK-120755