Question

How does random fertilization add to the genetic variation?

Answer 1

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Answer 2

Each gamete has a unique set of combination of genes. A male gamete can fertilize any of the female gametes.The fertilization between a male gamete and a female gamete occurs randomly in the Fallopian tube.As a result,each zygote is unique and hence variation occurs due to the different combination of genes from the male and female gamete.