Question

How does random fertilization add to the genetic variation?

Answer 1

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Answer 2

each ovum has slightly different chromosomes. hence there are a 'variety' of possibilities that the sperm could fertilize.

Answer 3

and vice versa.

Answer 4

Random fertilization helps to prevent natural selection thus when two organisms are mated on the bases of similarity or dissimilarity of characters then natural selection will occur and only a particular type of organisms will increase in number reducing the genetic variability thus to prevent natural selection from operating it is necessary that random fertilization occurs in a population and every organism gets an equal chance to survive.
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