Multiple choice

Assertion (A) : Segmental allopolyploids where all the chromosomes are homologous.

Reason (R) : Segmental allopolyploids can be identified by their meiotic behaviour.

  1. Both A and R are individually true and R is the correct explanation of A.

  2. Both A and R are individually true but R is not the correct explanation of A.

  3. A is true but R is false.

  4. A is false but R is true.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Segmental allopolyploids have chromosomes that are partially homologous (some chromosomes pair, others don't). Both statements are true - they do have homologous chromosomes (A is true), and their meiotic behaviour (irregular pairing) is used to identify them (R is true). However, R is not the EXPLANATION of A - meiotic behaviour doesn't cause the chromosomes to be homologous; the homology exists independently and is revealed by meiosis.

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