Question

State the exact location of centromere.

Answer 1

1. The position of the centromere on chromosomes is not fixed.
2. Chromosomes are classified into four types based on the position of the centromere.
3. These are metacentric, sub-metacentric, telocentric, and acrocentric.
4. A chromosome having a centromere at the centre is called a metacentric chromosome.
5. In this, the centromere divides the chromosome into two equal arms.
6. A chromosome having centromeres slightly away from the centre is called a sub-metacentric chromosome.
7. A chromosome having centromeres close to one of the ends is called an acrocentric chromosome.
8. A chromosome having a terminal centromere is called a telocentric chromosome.