Question

Geographical and reproductive isolation of organisms gradually leads to speciation.Give reason
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Answer 1

Geographical isolation leads to genetic diversion and reproductive isolation.

These lead to the formation of various species as animals, plants and other organisms as they are separated from exchange genetic material with an organism of same species.

There the theory of cross-species reproduction comes into place which leads to speciation.

Answer 2

Explanation:

Geographical and reproductive isolation of organisms gradually leads to speciation. Their reproductive ability and period is also different. (2) Therefore, the individuals from one species cannot reproduce with individuals from other species.

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