Principles Of Inheritance And Variation Ques 43
43. Genetic variation in a population arises due to
[NEET Kar. 2013]
(a) Mutations only
(b) Recombination only
(c) Mutations as well as recombination
(d) Reproductive isolation and selection
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Answer : c
Hints & Solution
(c) Crossing over leads to recombination of genetic material on the two chromosomes. Mutation results in alternation of DNA sequences and consequently results in change in the genotype and the phenotype of an organism. In addition to recombination, mutation is another phenomenon that leads to variation in DNA.
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