The reappearance of a recessive trait in the F2 generation is best explained by:

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Multiple Choice

The reappearance of a recessive trait in the F2 generation is best explained by:

Explanation:
Alleles separate during gamete formation, so each gamete carries only one allele for a gene. When the F1 generation (which are heterozygous, carrying one dominant and one recessive allele) self-pollinates or mates, their gametes can combine to produce offspring that receive the recessive allele from both parents. In a monohybrid cross Aa × Aa, about 1/4 of the offspring end up with two recessive alleles (aa) and thus express the recessive trait, even though it was hidden in the heterozygous parents. This reappearance isn’t due to dominance, independent assortment, or linkage; it’s the result of the segregation of alleles during meiosis.

Alleles separate during gamete formation, so each gamete carries only one allele for a gene. When the F1 generation (which are heterozygous, carrying one dominant and one recessive allele) self-pollinates or mates, their gametes can combine to produce offspring that receive the recessive allele from both parents. In a monohybrid cross Aa × Aa, about 1/4 of the offspring end up with two recessive alleles (aa) and thus express the recessive trait, even though it was hidden in the heterozygous parents. This reappearance isn’t due to dominance, independent assortment, or linkage; it’s the result of the segregation of alleles during meiosis.

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