Question
consider that a plant with genotype RR has red flowers and a plant with genotypes WW has white flowers. This plant species expresses incomplete dominance for the flower color when the plant is heterozygous. The offspring of a cross between RR plant and WW plant would be
a. all pink
b. red and pink
c. all white
d. pink and white
a. all pink
b. red and pink
c. all white
d. pink and white
Answers
GPT-4 Turbo
Incomplete dominance is a form of intermediate inheritance in which one allele for a specific trait is not completely expressed over its paired allele. This results in a third phenotype where the expressed physical trait is a combination of the phenotypes of both alleles.
Given that RR plants have red flowers and WW plants have white flowers, and the trait expresses incomplete dominance, when a heterozygous plant is produced from the cross, it will have a phenotype that is intermediate between the two parent phenotypes.
Therefore, if we cross an RR plant with a WW plant, the offspring will all have the genotype RW. This RW genotype will express the intermediate phenotype, which in this case is pink.
Hence, the correct answer is:
a. all pink
Given that RR plants have red flowers and WW plants have white flowers, and the trait expresses incomplete dominance, when a heterozygous plant is produced from the cross, it will have a phenotype that is intermediate between the two parent phenotypes.
Therefore, if we cross an RR plant with a WW plant, the offspring will all have the genotype RW. This RW genotype will express the intermediate phenotype, which in this case is pink.
Hence, the correct answer is:
a. all pink