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If a pea plant appears dwarf, what type of genetic information must it have?

Answer and explanation

Correct answer: Two recessive alleles

According to Mendel’s principle of dominance, a recessive phenotype appears only when both copies of the relevant gene are recessive. Using T for tallness and t for dwarfness, a dwarf pea plant must have the genotype tt. A Tt plant is tall because the dominant T masks t, while TT is also tall. Therefore option A is correct; the plant still has genes and chromosomes.

Related tags

Recessive TraitDwarf PlantMendelian InheritanceHeredity And EvolutionWorld Of LivingScienceClass 10 Mcq

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