The F₁ generation of a cross between two individuals, one that is homozygous dominant for a trait and the other that is homozygous recessive for the trait, will yield progeny with the same phenotype.

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When a homozygous dominant individual is crossed with a homozygous recessive individual, all of the offspring in the F1 generation will have the same phenotype, which will be that of the dominant allele. In this case, since the homozygous dominant individual has two dominant alleles and the homozygous recessive individual has two recessive alleles, all of the offspring will inherit one dominant allele from the homozygous dominant parent and one recessive allele from the homozygous recessive parent. This will result in all offspring having the dominant phenotype, even though they are heterozygous for the trait.

The F1 Generation of a Cross Between Two Individuals, One

The F₁ Generation of a Cross Between Two Individuals, One