Question

In red snapdragons, the combined expression of both alleles for flower color produces a new phenotype that is orange. This illustrates incomplete dominance. What are the chances of getting an orange flower from a cross between a yellow and orange snapdragon?

Answer 1

The chances of getting an orange flower from a cross between a yellow and orange snapdragon depend on the genotypes of the parents. If one parent is homozygous for the orange allele and the other is homozygous for the yellow allele, all of the offspring will have orange flowers. If one parent is heterozygous for the yellow and orange alleles and the other is homozygous for the orange allele, there is a 50% chance of getting orange flowers.

Step-by-step explanation:

In red snapdragons, the combined expression of both alleles for flower color produces a new phenotype that is orange due to incomplete dominance. In a cross between a yellow and orange snapdragon, the chances of getting an orange flower would depend on the genotype of the parents.

If the yellow snapdragon is homozygous (YY) for the yellow allele and the orange snapdragon is homozygous (OO) for the orange allele, all of the offspring will be heterozygous (YO) and have orange flowers.

However, if the yellow snapdragon is heterozygous (YO) for the yellow and orange alleles and the orange snapdragon is homozygous (OO) for the orange allele, there is a 50% chance of getting orange flowers and a 50% chance of getting yellow flowers.