Question

Read the given statements
(i) Centromere is present in the middle of the chromosome and forms two equal arms.
(ii) Chromosome has a terminal centromere
(iii) Centromere lies close to the end of the chromosome forming one extremely short and one very long arm
(iv) Centremere lies slightly away from the middle of the chromosome resulting into one shorter arm and one longer arm.
Select the correct option as per the codes given above-

• A. Meta centric- (i); Submeta centric- (iv); Acro centric- (iii); Telo centric- (ii)
• B. Meta centric- (i); Submeta centric- (ii); Acro centric- (iii); Telo centric- (iv)
• C. Meta centric- (iv); Submeta centric- (iv; Acro centric- (iii); Telo centric- (ii)
• D. Meta centric- (iv); Submeta centric- (ii); Acro centric- (iii); Telo centric- (i)

Answer 1

The correct option is A Meta centric- (i); Submeta centric- (iv); Acro centric- (iii); Telo centric- (ii)

Every chromosome has a primary constriction or the centromere on the sides of which kinetochores are present. Based on the position of centromere, the chromosomes are of 4 types:

• Metacentric - Centromere is present in the middle of the chromosome and forms two equal arms.
• Submetacentric - Centromere lies slightly away from the middle of the chromosome resulting into one shorter arm and one longer arm.
• Acrocentric - Centromere lies close to the end of the chromosome forming one extremely short and one very long arm.
• Telocentric - Chromosome has a terminal centromere.
• So, the correct option is 'Option A' .