Give an account of chromosomes and it\'s types.

1.	Give an account of chromosomes and it\'s types.
Answer» 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\tMonocentric:\xa0having only one centromere\tHolocentric:\xa0having diffused centromere and microtubules are attached along the length of a chromosome\tAcentric:\xa0chromosome may break and fuse together to form a chromosome without a centromere. It cannot attach to the mitotic spindle\tDicentric:\xa0chromosomal 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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