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Biology · 2025 · 1 mark
CBSE 2025 · Region 2 · Set 2 · Q13
Assertion (A): 'XX - XY' type of sex-determination mechanism is an example of male heterogamety. Reason (R): In birds male heterogamety is observed…
Assertion (A) : 'XX - XY' type of sex-determination mechanism is an example of male heterogamety.
Reason (R) : In birds male heterogamety is observed as males produce two different types of gametes.
Official answer
(C)
(A) is true, but (R) is false.
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