Question

In which type of chromosome, the centromere is located slightly away from the middle?

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

Hint:

Sub-metacentric chromosomes have a centromere slightly off-center, leading to arms of unequal length.

Answer 1

The Correct Option is B

Chromosomes are classified based on the position of the centromere:

• Metacentric Chromosome: The centromere is located at the center, dividing the chromosome into two equal arms.
• Sub-metacentric Chromosome: The centromere is slightly away from the middle, resulting in one arm being slightly longer than the other.
• Acrocentric Chromosome: The centromere is located close to one end, producing a very short arm and a long arm.
• Telocentric Chromosome: The centromere is at the very end, forming a single arm.

In sub-metacentric chromosomes, the arms are unequal due to the centromere being slightly off-center.