Question

Match column-I with column-II and choose the correct option.

• A. A – I; B – II; C – III; D – IV
• B. A – IV; B – III; C – II; D – I
• C. A – III; B – IV; C – II; D – I
• D. A – IV; B – III; C – I ; D – II

Answer 1

The correct option is C A – III; B – IV; C – II; D – I

1. Metacentric chromosomes have the centromere in the centre, such that both sections are of equal length. Human chromosomes 1 and 3 are metacentric.
2. Submetacentric chromosomes are chromosomes with the centromere placed slightly away from the centre which divides the chromosomes into unequal length.. Human chromosomes 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 17, 18 and X chromosomes are submetacentric.
3. Acrocentric chromosomes have a centromere which is located almost near the tip leading to one very long and one very short section. Human chromosomes 13, 15, 21, and 22 are acrocentric.
4. Telocentric chromosomes have centromere which are located at the terminal end. Telomeres may extend from both ends of the chromosome. Telocentric chromosomes are generally not seen in humans.