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Explain Accumulation of variations during sexual reproduction, with an example..

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Accumulation of Variations during Reproduction

The variations accumulate and pass on to more and more individuals with each generation. The diversity is small in case of asexually reproducing organism as it is caused by only errors of DNA copying mechanism.

Sexual reproduction causes more viable variations because:

→ There might be an error in the copying of DNA, though the event is rare.

→ Segregation of chromosome of maternal and paternal origin at the time of gamete formation is random.

→ There is an exchange of genetic material between homologous chromosomes during formation of gametes.

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