A purebred snapdragon with red flowers is crossed with a purebred snapdragon with white flowers. The offspring produced have pink flowers. The inheritance pattern indicated by this outcome isacomplete dominance bincomplete dominanceccomplete recessiveness dincomplete recessiveness
Question
A purebred snapdragon with red flowers is crossed with a purebred snapdragon with white flowers. The offspring produced have pink flowers. The inheritance pattern indicated by this outcome isacomplete dominance bincomplete dominanceccomplete recessiveness dincomplete recessiveness
Solution
The inheritance pattern indicated by the outcome where a purebred snapdragon with red flowers is crossed with a purebred snapdragon with white flowers, and the offspring have pink flowers, is:
b. incomplete dominance
Here's the step-by-step reasoning:
-
Identify the Parent Genotypes:
- Purebred red snapdragon: Let's denote the allele for red flowers as . Since it is purebred, its genotype is .
- Purebred white snapdragon: Let's denote the allele for white flowers as . Since it is purebred, its genotype is .
-
Cross the Parent Genotypes:
- When (red) is crossed with (white), the offspring will inherit one allele from each parent, resulting in the genotype .
-
Determine the Phenotype of the Offspring:
- In the case of incomplete dominance, the heterozygous genotype does not result in either the red or white phenotype. Instead, it results in a blend of the two, which is pink flowers.
-
Conclusion:
- The fact that the offspring have pink flowers (a blend of red and white) indicates that neither allele is completely dominant over the other. This blending of traits is characteristic of incomplete dominance.
Therefore, the correct answer is: b. incomplete dominance
Similar Questions
In snapdragons, there is one allele that produces red flowers and another allele that produces white flowers. Neither allele is dominant and heterozygous individuals have pink flowers. A plant breeder decides to cross a white-flowered snapdragon with a pink-flowered snapdragon. What is the expected phenotypic ratio among the offspring?Multiple Choice1:13:12:11:2:1
The photo shows a cross between a plant with white flowers and a plant with red flowers. The offspring is a plant with flowers that have both colors.Which pattern of inheritance is shown?A.CodominanceB.Incomplete dominanceC.Multiple genesD.Recessiveness
The flower color characteristic in a plant is determined by red and white alleles. If the only two possible phenotypes are red or white, which term describes this pattern of inheritance?Group of answer choicespolygeniccomplete dominanceincomplete dominanceco-dominance
n snapdragons, alleles resulting in red pigment and white pigment exhibit incomplete dominance. If red snapdragons are crossed with pure white snapdragons the offspring of the F1 generation will be Blank______.Multiple choice question.pinkredwhitedark red
Incomplete DominanceCodominanceMultiple AllelesPolygenic InheritanceLinked GenesRed hair and freckles, large ears and broad nose.Eye color, height, personality, skin color.Fur color in rabbits, blood type.Red and white flowers make pink flowers.Red and white flowers make red and white speckled flowers.The option "Red and white flowers make red and white speckled flowers." (5 of 5) has been selected. Press tab to choose a response area, and spacebar to insert it. Press escape to cancel.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.