Question

The chromosomes in which centromere is situated close to one end are

• A. Acrocentric
• B. Metacentric
• C. Sub-metacentric
• D. Telocentric

Answer 1

The correct option is A

Acrocentric

The correct option is A

Explanation of the Correct option:

1. A chromosome is said to be acrocentric if the centromere is located relatively near one end.
2. For instance, the p arm of chromosomes 13, 14, 15, 21, and 22 have a very small centromere because they are close to the p telomere.
3. These chromosomes feature blue heterochromatin on the p arm.
   

Explanation for Incorrect option:

Option B:

A chromosome with a centrally positioned centromere is known as a metacentric chromosome.

Option C:

1. A chromosome with its centromere close to the middle is said to be submetacentric.
2. As a result, the chromosomal arms (i.e., the p and q arms) have slightly different lengths and could perhaps take the form of an L.

Option D:

1. A chromosome with its centromere at one end is said to be telocentric.
2. The centromere is situated so close to the chromosome's terminus that the p arms are either scarcely or not at all visible.
3. The terminal centromere is found on telocentric chromosomes.

Final answer:
The chromosomes in which the centromere is situated close to one end are acrocentric.