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Cell Cycle and Cell Division — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYCell Cycle and Cell Division5 Marks
Question
Write brief note on the following:
  1. Synaptonemal complex.
  2. Metaphase plate.
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Answer

  1. Synaptonemal complex: It is formed when corresponding chromosome becomes intimately associated. The process of pairing is known as synapsis. It is so exact that pairing is not merely occurs between corresponding chromosomes, but between corresponding individual units.
  2. Metaphase plate: The bivalent arrange themselves on the equator of the bipolar spindle. The centromeres slightly project towards the periphery. The distribution of bivalents is at random so that the individual paternal and maternal chromosomes can face either of two poles of the spindle.

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