Question

Match the type of chromosome (Column I) with the position of its centromere (Column II): Column I: A. Metacentric, B. Sub-metacentric, C. Acrocentric, D. Telocentric
Column II: i. One extremely short arm and one very long arm ii. Terminal centromere iii. One short arm and one long arm iv. Two equal arms

• A. A-IV, B-III, C-I, D-II
• B. A-IV, B-I, C-III, D-II
• C. A-II, B-III, C-I, D-IV
• D. A-III, B-IV, C-II, D-I

Hint:

\[ \boxed{\text{Metacentric → equal arms}} \quad \boxed{\text{Sub-metacentric → unequal arms}} \quad \] \[ \boxed{\text{Acrocentric → one very short arm}} \quad \boxed{\text{Telocentric → single arm}} \]

Answer 1

The Correct Option is A

Chromosomes are classified by centromere position: metacentric has the centromere at the middle giving equal arms, submetacentric has it slightly off-center giving subtly unequal arms, acrocentric places it near the terminal end giving very unequal arms, and telocentric places it at the very tip. This positioning determines the ratio of the short arm (p) to the long arm (q) visible during metaphase.