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Assertion: Recombination is necessary to add variety into the genetic make-up of the gametes during meiosis II. 

Reason: Because only sexual reproduction can lead to evolution in this variant.

Option: 1


Option: 2


Option: 3


Option: 4


Answers (1)


 Both Assertion & Reason are true and the reason is the correct explanation of the assertion. Animals reproduce by merging their gametes, or when two cells combine with their genetic material to form a zygote. The zygote will contain an increase of chromosomes in its nucleus if germ cells, which give rise to gametes, maintain their ploidy during division like somatic cells do. Since this variation only holds the key to evolution via sexual reproduction, this recombination is crucial for the variation to be introduced in the genetic composition of the gametes.

Option 1 is the correct answer. 

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