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

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYCell Cycle and Cell Division2 Marks
Question
Colchicine is known to be the mitotic poison. How?
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Answer

Colchicine is considered to be the mitotic poison because
  1. This alkaloid inhibits the formation of spindle by preventing assembly of microtubules. It is an alkaloid obtained from the corms of Autumn crocus.
  2. The chromosomes duplicate, but they remain within the same cell, increasing the number of chromosomes. As a result, the colchicine treated meristematic cells show doubling of chromosome.

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