Question

What are chromosomes? Explain four different types of chromosomes based on the position of centromere with neat diagram.

Answer 1

What are chromosomes?

Chromosomes are the highly condensed coiled chromatin fibres. each of the chromosomes carries a large number of genes.


Based upon the position of the centromere, chromosomes are of four types:

Metacentric − centromere located in the middle, forming two equal arms of the chromosome

Submetacentric − centromere located slightly away from the middle, resulting in one arm being longer than the other

Acrocentric − centromere located close to the end, resulting in one arm being extremely longer than the other

Telocentric − centromere located at the terminal point