A) mutation
B) isolation
C) polyploidy
D) sexual reproduction
Correct Answer: C
Solution :
Presence of more than two sets of chromosomes is known as polyploidy. ?Polyploidy? causes fast speciation as it leads to complete reproductive isolation of an individual from other gene pools. Polyploidy is found in nature due to the failure of chromosomes to separate at the time of anaphase either due to disjunction or due to failure of spindle formation.
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