Question

Explain why variations are observed in the offsprings of sexually reproducing organisms?

Answer 1

In case of sexual reproduction, variation is observed in the offspring due to the following reasons:

1. Two parents are involved, who are different from each other. One set of chromosomes comes from the male gamete and the other comes from the female gamete and the fusion of these two creates variations and produces a distinct individual.
2. The male and female gametes are formed by meiotic division which allows crossing over and recombination which further generates variation in the genes of offspring.