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Give an account of chromosomes and …

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Give an account of chromosomes and it's types.
  • 1 answers

Gaurav Seth 4 years, 1 month ago

Chromosomes are thread-like structures present in the nucleus, which carries genetic information from one generation to another. They play a vital role in cell division, heredity, variation, mutation, repair and regeneration.

Based on the number of centromeres present

  1. Monocentric: having only one centromere
  2. Holocentric: having diffused centromere and microtubules are attached along the length of a chromosome
  3. Acentric: chromosome may break and fuse together to form a chromosome without a centromere. It cannot attach to the mitotic spindle
  4. Dicentric: chromosomal aberration where chromosomes break and fuse together with two centromeres. They are also unstable as two centromeres tend to migrate to opposite poles resulting in fragmentation
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