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If a plant appears tall but also carries information for dwarfness, how can a dwarf plant appear among its offspring?

Answer and explanation

Correct answer: When the recessive form for dwarfness is received from both parents

A tall plant may be heterozygous, represented as Tt, where T is dominant for tallness and t is recessive for dwarfness. Its tall appearance hides the effect of t, but the plant can pass t to some gametes. If the other parent also contributes t, the offspring genotype becomes tt and the dwarf phenotype is expressed. Hence option A is correct; no gamete formation would prevent sexual reproduction, and chromosome doubling is irrelevant.

Related tags

Recessive TraitGametesOffspringHeredity And EvolutionWorld Of LivingScienceClass 10 Mcq

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