Question

Assertion(A) Meiotic division occurs in reproductive cells.
Reason (R) Synapsis occurs during zygotene of meiosis.

• A. If both A and R are true and R is the correct explanation of A
• B. If both A and R are true, but R is not the correct explanation of A
• C. If A is true, but R is false
• D. If A is false, but R is true

Answer 1

Answer: (B)

Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Meiotic division is a reductional division. It occurs in reproductive cells as it helps to maintain the fixed number of chromosomes in sexually reproducing organisms. Prophase-I of meiotic division is a long phase, which is divided into five subphases, i.e. leptotene, zygotene, pachytene, diplotene and diakinesis. Synapsis or Pairing of chromosomes occurs during the zygotene stage.