Question

snapdragons show incomplete dominance in their flowers. a pink snapdragon is crossed with a red snapdragon. what color(s) are the offspring? view available hint(s)for part a 100% pink 100% red 50% red, 50% white 50% red, 50% pink

Answer 1

When a pink snapdragon is crossed with a red snapdragon, all offspring are expected to be pink due to incomplete dominance. The outcome is a set of heterozygous pink flowers resulting from the mixture of the red and white alleles.

Step-by-step explanation:

When pink snapdragons, which are heterozygotes for flower color, are crossed with red snapdragons, a display of incomplete dominance is observed. Incomplete dominance is a form of inheritance where the phenotype of the heterozygote is an intermediate of the phenotypes of the two homozygous parents. As snapdragons exhibit this pattern, a pink snapdragon crossed with a red snapdragon will result in pink offspring. This is because neither allele is completely dominant over the other, leading to a mixture of the two colors in the phenotype of the offspring.

In the specific case of snapdragons, crossing a homozygous red snapdragon (CRCR) with a heterozygous pink snapdragon (CRCW) would yield all pink offspring (CRCW) because the allele for red flowers is incompletely dominant over the allele for white flowers. Therefore, the phenotypic ratio expected from such a cross would be 100% pink, as the heterozygote exhibits the intermediate phenotype between the two homozygous states.