Question

Consider the following statements:
Assertion (A): Telocentric chromosome contains one arm.
Reason (R): Telocentric chromosome shows middle centromere.

• A. Both (A) and (R) are true, (R) is the correct explanation of (A)
• B. Both (A) and (R) are true, (R) is not the correct explanation of (A)
• C. (A) is true, but (R) is false
• D. (A) is false, but (R) is true

Hint:

{Chromosome Types based on Centromere Position:}

• {Metacentric:} Middle (V-shape).
• {Sub-metacentric:} Slightly off-center (L-shape).
• {Acrocentric:} Near the end (J-shape).
• {Telocentric:} Terminal/End (i-shape).

Answer 1

The Correct Option is C

Step 1: Analyze Assertion (A):
A Telocentric chromosome has the centromere located at the extreme end (terminal position). Consequently, it appears to have only one arm visible.
Status: True.
Step 2: Analyze Reason (R):
A chromosome with a middle centromere is called Metacentric (forming a V-shape). A Telocentric chromosome does not have a middle centromere.
Status: False.
Step 3: Conclusion:
(A) is true, and (R) is false. This corresponds to Option (C).