The individuals Mendel observed in the F₁ generations were always A) homozygous recessive. B) homozygous dominant. C) heterozygous. D) codominant.

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The individuals Mendel observed in the FS1U1B11S1U1B0 generations were all heterozygous, meaning they had one dominant and one recessive allele for the trait being studied. This is because the parents in the P generation were homozygous for different alleles, resulting in all heterozygous offspring in the F1 generation. When these F1 individuals were crossed, they produced a 3:1 ratio of heterozygous (S1U1B1S1U1B0) to homozygous recessive (S1U0B0S1U0B0) offspring. The homozygous dominant (S1U1B1S1U1B1) and codominant (e.g. S1U1B0S1U0B1) genotypes would not have appeared in these crosses because they were not present in the P generation.

The Individuals Mendel Observed in the F1 Generations Were Always

The Individuals Mendel Observed in the F₁ Generations Were Always