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If gametes do not provide half the chromosome number in every generation, what will be the biggest long-term problem?

Answer and explanation

Correct answer: Chromosome number will become unstable generation after generation

Fertilisation combines the chromosome sets carried by two gametes. Normally, meiosis makes each gamete haploid, so two haploid sets combine to restore the stable diploid number. If gametes carried the full diploid number, fusion would produce twice as many chromosomes, and repeated generations would cause progressive chromosome-number increase and genetic imbalance. Thus option A is correct. The other choices do not follow from chromosome-number change and are unrelated to the mechanism.

Related tags

Genetic StabilityChromosome NumberGametesHeredity And EvolutionWorld Of LivingScienceClass 10 Mcq

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