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  • Bivalents are seen arranged on the metaphasic plate during  Option: 1 Metaphase I  <str

Bivalents are seen arranged on the metaphasic plate during
 

Option: 1

Metaphase I
 


Option: 2

Metaphase II
 


Option: 3

Anaphase I
 


Option: 4

Anaphase II
 


Answers (1)

best_answer

 

 

Stages of Meiosis ? - Metaphase I and Anaphase I

Metaphase I

  • During this phase, bivalents arrange themselves on the metaphase plate.
  • Hence, a fully formed spindle and equatorial alignment of the chromosomes are seen during this phase.
  • The alignment of homologous chromosomes is independent of each other.
  • This is responsible for generating genetic variability.

Anaphase I

  • The homologous chromosomes of each bivalent separate from each other.
  • The separated homologous chromosomes move to opposite poles
  • Therefore, in this phase, the chromosomes separate and not the chromatids.
  • So, each chromosome will still have two sister chromatids.
  • Hence, anaphase I involve a reduction in the number of chromosomes.

 

Homologous Chromosomes separating from each other during Anaphase I

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During metaphase I, the bivalents of the homologous pair are seen attached on the metaphase plate.

Posted by

HARSH KANKARIA

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