A) effect of hormones
B) nutritive value
C) mutation
D) asexual reproduction
Correct Answer: C
Solution :
Mutation along with variations are raw material for evolution. Mutation is a sudden and heritable change in an organism, which is generally due to change in the base sequence of the nucleic acid in the genome of organism, It is the ultimate source of variations. Mutation may produce a new allele not present in the population or may change the frequency of existing alleles. However, some mutations a selectable (ie, conferring some type of advantage on organisms possessing them), while others are non-selectable.
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