Question

Two plants, both heterozygous for the gene that controls flower color are crossed. What percentage of their offspring will have purple flowers? What percentage will have white flowers?

Answer 1

A dominant trait can be described as a trait that masks the effect of a recessive trait. A recessive trait can be described as a trait that gets suppressed by a dominant allele. Lets consider, purple colour to be dominant over the white color.

In such a circumstance, Heterozygous plants when crossed will produce 25% homozygous purple plants. 50% plants will be heterozygous purple. 25% of the plants will be white.

Phenotype would show the probability of 75% of the plants to be purple whereas 25% of the plants to be white.

Answer 2

A dominant trait can be described as a trait that masks the effect of a recessive trait. A recessive trait can be described as a trait that gets suppressed by a dominant allele. Lets consider, purple colour to be dominant over the white colour.

In such a circumstance, Heterozygous plants when crossed will produce 25% homozygous purple plants. 50% plants will be heterozygous purple. 25% of the plants will be white.

Phenotype would show the probability of 75% of the plants to be purple whereas 25% of the plants to be white.