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Science · 2024 · 2 marks
CBSE 2024 · Region 4 · Set 3 · Q24
Explain how equal genetic contribution of male and female parents is ensured in the progeny.
Explain how equal genetic contribution of male and female parents is ensured in the progeny.
Marking-scheme solution
Each parent produces gametes that have half the number of chromosomes. During sexual reproduction, a female gamete fuses with a male gamete to form a zygote. Thus, zygote restores the original number of chromosomes in the progeny ensuring equal contribution of both the parents in the progeny.
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CBSE Class 10 Science past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.