Problemas
A snapdragon with red flowers is crossed with a snapdragon with white flowers. Flower color in snapdragons exhibits incomplete dominance Which statements are true about the flowers of the offspring produced by this cross? Select all that apply. A All of the offspring have pink flowers. B All of the offspring have red flowers c All of the offspring have white flowers. D The red and white genes blend to form offspring with red and white spots on their flowers. The red and white genes blend to form offspring with pink flowers. F The red and white genes blend to form some offspring with white flowers and some with red.
Roztwór
Erica
élite · Tutor durante 8 años
3.7
(376 Votos)
Respuesta
A
Explicación
## Step 1The problem involves the concept of incomplete dominance in genetics. Incomplete dominance is a form of inheritance where the phenotype of the heterozygous genotype is an intermediate phenotype between the two homozygous genotypes.## Step 2In this case, the snapdragon flower color is an example of incomplete dominance. When a red-flowered snapdragon (RR) is crossed with a white-flowered snapdragon (WW), the offspring will have the genotype RW.## Step 3The phenotype of the RW genotype is pink, which is an intermediate between red and white. This is because the red and white genes blend to form pink flowers.## Step 4Therefore, all the offspring from this cross will have pink flowers. This corresponds to option A.## Step 5Options B, C, D, E, and F are incorrect because they do not accurately describe the outcome of the cross. The red and white genes do not blend to form offspring with red and white spots on their flowers (option D), nor do they blend to form offspring with red and white flowers (option E). The red and white genes also do not blend to form some offspring with white flowers and some with red (option F).