The stage during which separation of the paired homologous chromosomes

1.	The stage during which separation of the paired homologous chromosomes begins is(1) Pachytene(2) Diplotene(3) Diakinesis(4) Zygotene
Answer» The correct option is(2) Diplotene Explanation: The separation of the paired homologous chromosomes begins in dlplotene stage. In this phase, the dissolution of synaptonemal complex begins. The recombined homologous chromosomes of the bivalents separate from each other except at the sites of crossovers. Zygotene is the second state of prophase I of meiosis. It is associated with the formation, of synapsis. Next stage is pachytene during which crossing over occurs between non-sister chromatids of the homologous chromosomes. Diakinesis is the final stage of meiotic prophase-I. This is marked by terminalisation of chiasmata.

The stage during which separation of the paired homologous chromosomes begins is(1) Pachytene(2) Diplotene(3) Diakinesis(4) Zygotene

Answer»

The correct option is(2) Diplotene

Explanation:

The separation of the paired homologous chromosomes begins in dlplotene stage. In this phase, the dissolution of synaptonemal complex begins. The recombined homologous chromosomes of the bivalents separate from each other except at the sites of crossovers.

Zygotene is the second state of prophase I of meiosis. It is associated with the formation, of synapsis. Next stage is pachytene during which crossing over occurs between non-sister chromatids of the homologous chromosomes. Diakinesis is the final stage of meiotic prophase-I. This is marked by terminalisation of chiasmata.

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