The Living World Question 206

Question: Assertion : Geographic isolation brings about sympatric speciation. Reason : Reproductive isolation brings about allopatric speciation.

Options:

A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

C) If the assertion is true but the reason is false

D) If both the assertion and reason are false

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Answer:

Correct Answer: D

Solution:

In allopatric speciation (species formation), a part of the population becomes geographically isolated from the main population.

The population becomes entirely separated and finally constitutes a new species.

In sympatric speciation, a small segment of the original population becomes isolated reproductively.

As the isolating mechanism comes into force, a new subspecies emerges.

In due course of time a new species is formed.