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Which feature of gametes is necessary to keep the chromosome number normal after fertilisation?

Answer and explanation

Correct answer: Having half the chromosome number

In a diploid organism, body cells contain two sets of chromosomes. Meiosis produces haploid gametes containing one set, or half the somatic chromosome number. During fertilisation, one male and one female gamete fuse, so their two haploid sets restore the normal diploid number. If gametes were diploid, the chromosome number would double in each generation. Therefore option A is correct; options B, C, and D do not maintain genetic continuity.

Related tags

ChromosomesGametesFertilisationHeredity And EvolutionWorld Of LivingScienceClass 10 Mcq

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