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In Mendel's monohybrid cross the recessive trait reappears in the second generation. What is the correct reason?

Answer and explanation

Correct answer: The recessive trait was hidden in the first generation, not lost

In a typical monohybrid cross, the parental alleles combine in F₁ so that the dominant phenotype is visible, while the recessive allele remains present but masked in a heterozygous genotype. During gamete formation and fertilisation, two recessive alleles may unite in an F₂ offspring, producing the recessive phenotype again, commonly in a 3:1 phenotypic ratio. Thus option A is correct.

Related tags

Mendel LawsRecessive TraitMonohybrid CrossInheritanceMendel’s LawsMendel S LawsHeredity And EvolutionScience

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