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Question

Which stage is responsible for genetic variation and evolution of species?

A
Diplotene
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B
Diakinesis
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C
Pachytene
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D
Anaphase II
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Solution

The correct option is C Pachytene
For genetic variation and evolution to happen the exchange of genetic material is needed. Exchange of genetic material occurs by crossing over between two homologous chromosomes occurring at the pachytene stage.

So, the correct option is 'pachytene'

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