Classify the chromosomes on the basis of position of centromere.

Explanation

Chromiosomes are classified into the following four types according to the position of the centromere in them.
They are as follows:
1. Metacentric: In metacentric chromosome, the centromere is situated in the middle of the chromosome. The two arms of the chromosome are nearly equal. It appears V-shaped during anaphase.
2. Sub-metacentric: In sub-metacentric chromosome, the centromere is situated some distance away from the middle. Due to this, one arm of the chromosome is shorter than the other. It appears L-shaped during anaphase.

3. Acrocentric: In acrocentric chromosome, the centromere is situated near the end of the chromosome. one arm of the acrocentric chromosome is very short while the other arm is long making it appear like J shaped during anaphase.
4. Telocentric: In telocentric chromosome, the centromere is situated at the tip of the chromosome. Telocentric chromosome has only one arm thus it appears rod-shaped.