Give a brief account of the types of chromosomes based on the position of Centromere.

Explanation

Based op the position of the centromere, the chromosomes can be classified into four types.
1) Metacentric : The centromere is located in the centre of the chromosome, forming two equal arms. These chromosomes appear as .V. shaped during anaphase.
2) Sub-metacentric : The centromere is located slightly away from the centre and thus forming two unequal arms. Such chromosomes appear either J or L shaped during anaphase.
3) Acrocentric : Centromeres located close to one end of chromosomes are known as subterminal. These chromosomes appear either as J or rod-shaped during anaphase.
4) Telocentric : The rod-like chromosomes which have the centromere on the proximal end are known as telocentric chromosomes.