Question

Q4. Assertion (A): The process by which new spieces develop from the existing
spieces us called Speciation
Reason(R): Geographic isolation, genetic drift and variation contribute to
the speciation.​

Answer 1

Answer:

If both the assertion and the reason are true and the reason is a correct explanation of the assertionIf both the assertion and reason are ture but the reason is not a correct explanation of the assertionIf the assertion is true but the reason is falseIf both the assertion and reason are false

Solution :

The phenomenon of development of a new species from pre-existing one is called speciation. A species is a collection of demes. The deme is a groups of populations with a common gene pool.