Question

Match List-I with List-II:

List-I	List-II
A. Metacentric chromosome	I. Chromosome has a terminal centromere
B. Sub-metacentric chromosome	II. Middle centromere forming two equal arms of chromosome
C. Acrocentric chromosome	III. Centromere is slightly away from the middle of chromosome resulting into two unequal arms
D. Telocentric chromosome	IV. Centromere is situated close to its end forming one extremely short and one very long arm

Choose the correct answer from the options given below:

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

Answer 1

The Correct Option is D

To solve this question, we need to match each type of chromosome structure listed in List-I with its correct characteristic from List-II. Let's examine each chromosome type:

1. Metacentric chromosome: In a metacentric chromosome, the centromere is located nearly in the middle, creating two arms of approximately equal length.
   From List-II, the correct match is: A. Metacentric chromosome - II. Middle centromere forming two equal arms of chromosome.
2. Sub-metacentric chromosome: In this type, the centromere is slightly away from the center, producing two arms of unequal length where one arm is longer than the other.
   From List-II, the correct match is: B. Sub-metacentric chromosome - III. Centromere is slightly away from the middle of chromosome resulting into two unequal arms.
3. Acrocentric chromosome: An acrocentric chromosome has the centromere very close to one end, creating a very long arm and a very short one.
   From List-II, the correct match is: C. Acrocentric chromosome - IV. Centromere is situated close to its end forming one extremely short and one very long arm.
4. Telocentric chromosome: In telocentric chromosomes, the centromere is at the very end of the chromosome. This creates a single arm, as there is no notable second arm on one side of the centromere.
   From List-II, the correct match is: D. Telocentric chromosome - I. Chromosome has a terminal centromere.

Thus, the correct matching from List-I to List-II is: A-II, B-III, C-IV, D-I.