Question

Assertion : Bivalents are formed during pachynema.
Reason : Bivalent and tetrad conditions of chromosomes are two different conditions.

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

Answer 1

Answer: (C)

Pairing of the homologous chromosomes occurs during pachynema. Each bivalent or tetrad chromosome pair is made up of actually four chromatids, two of each chromosome.