Question

Which of the following would be true of a plant heterozygous for a single gene controlling flower color? (Assume complete dominance).

If crossed with another heterozygous plant, the majority of progeny will have the dominant flower color.

Answer 1

If crossed with another heterozygous plant, the majority of progeny will have the dominant flower color.

Step-by-step explanation:

If you cross a dominant heterozygous plant with a single gene with another heterozygous plant, because of the dominance effect in the heterozygous plant, the phenotype is affected and because dominance makes it difficult to distinguish between a homozygous and heterozygous plant, the heterozygous dominant plant in this case will act like a homozygous parent and hence the majority of progeny will have dominant flower color.