NEET Biology question

BiologyPrinciples of Inheritance and VariationNEET

Which of the following statements about mutation are true? I. Mutations are the source of new alleles for genes; II. Organisms are able to create mutations to meet their specific needs; III. Mutations are random events and can happen in any cell at any time; IV. Most mutations tend to be harmful or have no effect on an organism.

Answer: (C)

Solution

Mutations are indeed the ultimate source of new alleles (I), occur as random, spontaneous events that can arise in any cell at any time (III), and are, in the vast majority of cases, either harmful or neutral in their effect, with beneficial mutations being comparatively rare (IV). Statement II is

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Question ID VK-120028