Which stage of cell division is responsible for genetic variations and evolution of species?

Diplotene

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Diakinesis

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Pachytene

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Anaphase II

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Solution

The correct option is C
Pachytene

Pachytene is the stage at which crossing over takes place. Crossing over is responsible for the exchange of genetic information between the non-sister chromatids of homologous chromosomes. This exchange of genetic information is responsible for the genetic variation that occurs across generations.

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Similar questions

Column I	Column II
A. Pachytene	(i) Synapsis
B. Anaphase I	(ii) Terminalisation of chiasmata
C. Diakinesis	(iii) Crossing over
D. Zygotene	(iv) Homologous chromosomes separate

Column I	Column II
A. Pachytene	(i) Synapsis
B. Anaphase I	(ii) Terminalisation of chiasmata
C. Diakinesis	(iii) Crossing over
D. Zygotene	(iv) Homologous chromosomes separate

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Z y g o t e n e \to L e p t o t e n e \to P a c h y t e n e \to D i p l o t e n e \to D i a k i n e s i s

D i a k i n e s i s \to Z y g o t e n e \to L e p t o t e n e \to P a c h y t e n e \to D i p l o t e n e

L e p t o t e n e \to Z y g o t e n e \to P a c h y t e n e \to D i p l o t e n e \to D i a k i n e s i s .

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