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If a pea plant is dwarf, what is the most correct genetic conclusion about it?

Answer and explanation

Correct answer: It has both recessive copies

The governing concept is recessive inheritance. Represent the tall allele by T and the dwarf allele by t. Since T masks t in a heterozygous Tt plant, a plant can show dwarfness only when it lacks a dominant T allele. Its genotype must therefore be tt, meaning that it has received a recessive copy from each parent. Option B is correct. A dominant copy would produce tallness, while the other choices deny the genetic basis of the trait.

Related tags

Dwarf-PeaRecessive-GenotypeMendelHeredity And EvolutionWorld Of LivingScienceClass 10 Mcq

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