Question

Match the LIST-I with LIST-II

Choose the correct answer from the options given below:

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

Hint:

Remember the prefixes: \textbf{Meta-} (middle), \textbf{Sub-meta-} (below middle), \textbf{Acro-} (peak/tip), and \textbf{Telo-} (end). This will help you visualize and remember the centromere positions.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Chromosomes are classified into four types based on the position of the centromere, which divides the chromosome into two arms (a short 'p' arm and a long 'q' arm).
Step 2: Detailed Explanation:
Let's match each chromosome type in LIST-I with its corresponding centromere position in LIST-II:


A. Metacentric chromosome: The centromere is located exactly in the center, creating two arms of equal length. This matches with III. The centromere is located in the center of chromosome.

B. Submetacentric chromosome: The centromere is located slightly off-center, resulting in one arm being slightly shorter than the other. This matches with I. The centromere is located on one side of the central point of the chromosome.

C. Acrocentric chromosome: The centromere is located very close to one end, resulting in one very short arm (often with satellites) and one very long arm. This matches with IV. The centromere is located close to one end of the chromosome.

D. Telocentric chromosome: The centromere is located at the very end (telomere) of the chromosome, so there is only one arm. This matches with II. The centromere appears to be located at one end of the chromosome.

Step 3: Final Answer:
The correct matching is: A-III, B-I, C-IV, D-II. This corresponds to option (C).