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  • Explain how sexual reproduction gives rise to more viable variations than asexual reproduction. How does this affect the evolution of those organisms that reproduce sexually?

Q. 10.     Explain how sexual reproduction gives rise to more viable variations than asexual reproduction. How does this affect the evolution of those organisms that reproduce sexually?

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Sexual reproduction causes more viable variations due to the following reasons:

1)Error in copying DNA, which is not highly significant.

2) Random segregation of paternal and maternal chromosomes at the time of gamete formation.

3)Exchange of genetic material between homologous chromosomes during the formation of gametes.

4) Accumulation of variations occurred due to sexual reproduction over generation after generation and selection by nature created wide diversity. 

In the case of asexual reproduction, only very small changes due to inaccuracies in DNA copying pass on to the progeny. Thus, offspring of asexual reproduction are more or less genetically similar to their parents. So, it can be concluded that evolution in sexually reproducing organisms proceeds at a faster pace than in asexually reproducing organisms. 
 

Posted by

Pankaj Sanodiya

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