Question
Plant Reproduction
Plant Reproduction
Mitchell and Emma are senior students that share a biology class. Their high school has a section on school property that has been used to grow various plants over the years. Each student is required to select a plant to study for their final project. The pictures show some of the plants that are grown on school property. The tulips, irises, and daffodils reproduce asexually. The snapdragons and the roses reproduce sexually.
Trial Parent Genotypes Offspring Phenotypes
V PP x ww light purple
W Ww x WW yellow
X PP x WW purple/yellow
Y pp x PP purple
Z WW x PP yellow/purple
Match each trial to the type of dominance the offspring show.
1. V
2. W
3. X
4. Y
5. Z
a. complete dominance
b. codominance
c. incomplete dominance
Plant Reproduction
Mitchell and Emma are senior students that share a biology class. Their high school has a section on school property that has been used to grow various plants over the years. Each student is required to select a plant to study for their final project. The pictures show some of the plants that are grown on school property. The tulips, irises, and daffodils reproduce asexually. The snapdragons and the roses reproduce sexually.
Trial Parent Genotypes Offspring Phenotypes
V PP x ww light purple
W Ww x WW yellow
X PP x WW purple/yellow
Y pp x PP purple
Z WW x PP yellow/purple
Match each trial to the type of dominance the offspring show.
1. V
2. W
3. X
4. Y
5. Z
a. complete dominance
b. codominance
c. incomplete dominance
Answers
GPT-4o mini
To determine the type of dominance for each trial based on the given parent genotypes and offspring phenotypes, let's analyze them one by one:
1. **Trial V (PP x ww)** - The offspring is light purple. This indicates that one allele is completely dominant over the other. Here, "P" (purple) is dominant over "w" (white, if assumed). Therefore, it shows **a. complete dominance**.
2. **Trial W (Ww x WW)** - The offspring is yellow. If we assume that "W" leads to a yellow phenotype and is dominant, this trial demonstrates complete dominance since yellow appears in the offspring regardless of whether it is from a heterozygous or homozygous parent. Therefore, it shows **a. complete dominance**.
3. **Trial X (PP x WW)** - The offspring is purple/yellow. This suggests that both purple and yellow alleles are expressed in the offspring phenotype, indicating **b. codominance**.
4. **Trial Y (pp x PP)** - The offspring is purple, which indicates that the dominant allele "P" expresses itself fully over the recessive "p". This shows **a. complete dominance**.
5. **Trial Z (WW x PP)** - The offspring is yellow/purple, similar to Trial X. This indicates that both alleles are prominent in the phenotype of the offspring, revealing **b. codominance**.
Summarizing the matched dominance types:
1. V - a. complete dominance
2. W - a. complete dominance
3. X - b. codominance
4. Y - a. complete dominance
5. Z - b. codominance.
1. **Trial V (PP x ww)** - The offspring is light purple. This indicates that one allele is completely dominant over the other. Here, "P" (purple) is dominant over "w" (white, if assumed). Therefore, it shows **a. complete dominance**.
2. **Trial W (Ww x WW)** - The offspring is yellow. If we assume that "W" leads to a yellow phenotype and is dominant, this trial demonstrates complete dominance since yellow appears in the offspring regardless of whether it is from a heterozygous or homozygous parent. Therefore, it shows **a. complete dominance**.
3. **Trial X (PP x WW)** - The offspring is purple/yellow. This suggests that both purple and yellow alleles are expressed in the offspring phenotype, indicating **b. codominance**.
4. **Trial Y (pp x PP)** - The offspring is purple, which indicates that the dominant allele "P" expresses itself fully over the recessive "p". This shows **a. complete dominance**.
5. **Trial Z (WW x PP)** - The offspring is yellow/purple, similar to Trial X. This indicates that both alleles are prominent in the phenotype of the offspring, revealing **b. codominance**.
Summarizing the matched dominance types:
1. V - a. complete dominance
2. W - a. complete dominance
3. X - b. codominance
4. Y - a. complete dominance
5. Z - b. codominance.