What are dominant and recessive traits?

Answer:

When Mendel crossed one tall and one short pea plant, all the offsprings (F1 generation) were tall. When he self-crossed the F1 generation, among them 3/4th of the progenies were tall whereas 1/4th were short. Thus he concluded that although the F1 progeny had both tall and short traits, only tall plants were observed in the F1 generation, this means that tallness is a dominant trait.

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