Intext question XXV — task. Science CBSE, Class 10.

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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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?

a. The fusion of gametes produced by male and female results in sexual reproduction. Because:

There may be an error in copying DNA, though this is rare
Segregation of chromosomes of maternal and paternal origin at the time of gamete formation is random
There is an exchange of genetic material between homologous chromosomes during gamete formation
All the above

b. Which of the following statements is correct?

Asexual reproduction has significantly less variation because only one parent is involved
Inaccuracies in DNA copying cause very small changes that are passed on to the progeny
Asexual reproduction offspring are genetically similar to their parents
Evolution in sexually reproducing organisms occurs faster than evolution in asexually reproducing

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36. Intext question XXV

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