Question

A telocentric chromosome differs from an acrocentric chromosome in that

• A. The former has a sub-terminal centrally located centromere.
• B. The centromere in the former is terminal and latter has medially located centromere.
• C. The former has sub-terminal centromere and the latter has medially located centromere.
• D. The former has terminal and the latter has sub-terminal centromere.

Answer 1

The correct option is D The former has terminal and the latter has sub-terminal centromere.

A telocentric chromosome is the one in which centromere is present at end of chromosome. These chromosomes show absence of p arm. Hence the centromere is terminal in position.

An acrocentric chromosome is the one in which centromere is present towards the end of the p arm. Hence the centromere is sub-terminal in position.

Thus the correct answer is option D.