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Model Paper 6 — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETModel Paper 64 Marks
MCQ
Pachytene is the stage-
  • ✓
    Characterised by the appearance of recombination nodule
  • B
    Chromosomes start pairing togather
  • C
    Compaction of chromosome occurs
  • D
    Dissolution of synaptonemal Complex occurs
✓

Answer

Correct option: A.
Characterised by the appearance of recombination nodule
(A)
The first two stages of prophase I are relatively shortlived compared to the next stage that is pachytene. During this stage the four chromatids of each bivalent chromosomes became distinct and clearly appears as tetrads. This stage is characterized by the appearance of recombination nodules, the site at which crossing over occurs between non-sister chromatids of the homologous chromosomes.

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