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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.
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 2024board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.