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What does the 3:1 result in the second generation of a monohybrid pea cross show?

Answer and explanation

Correct answer: Dominant and recessive traits remain as separate inherited units

The governing concept is Mendel’s law of segregation. In a monohybrid cross such as Tt × Tt, the alleles separate during gamete formation, producing TT, Tt, Tt and tt in a 1:2:1 genotypic ratio. Because T is dominant, three offspring show the dominant phenotype and one shows the recessive phenotype. Thus option A is correct; the other choices incorrectly describe blending, absence of variation or chromosome formation.

Related tags

Monohybrid-CrossMendelian-Inheritance3:1-RatioHeredity And EvolutionWorld Of LivingScienceClass 10 Mcq

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