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.
Mitchell crosses different plants in five trials and recorded his results, with P = dark purple, p = pink, W = yellow, and w = white. The table shows his results.
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.
V
W
X
Y
Z
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.
Mitchell crosses different plants in five trials and recorded his results, with P = dark purple, p = pink, W = yellow, and w = white. The table shows his results.
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.
V
W
X
Y
Z
Answers
GPT-4o mini
To identify the type of dominance for each trial based on the parent genotypes and offspring phenotypes, we need to analyze each trial's results.
1. **Trial V (PP x ww):**
- Offspring Phenotype: light purple
- This indicates incomplete dominance because the offspring are a blend of the dominant (purple) and recessive (white) traits, resulting in a new phenotype (light purple).
2. **Trial W (Ww x WW):**
- Offspring Phenotype: yellow
- This indicates complete dominance. Since WW and Ww both yield yellow offspring (the dominant phenotype), the recessive trait does not appear in the offspring.
3. **Trial X (PP x WW):**
- Offspring Phenotype: purple/yellow
- This suggests codominance, as both purple (dominant) and yellow (dominant) phenotypes are expressed separately in the offspring.
4. **Trial Y (pp x PP):**
- Offspring Phenotype: purple
- This illustrates complete dominance, as all the offspring will display the dominant purple phenotype since PP (purple) is crossed with pp (pink).
5. **Trial Z (WW x PP):**
- Offspring Phenotype: yellow/purple
- Similar to Trial X, this indicates codominance since both the yellow (from WW) and the purple (from PP) traits are displayed in the offspring.
Thus, matching the trials to the type of dominance:
- **V:** Incomplete dominance
- **W:** Complete dominance
- **X:** Codominance
- **Y:** Complete dominance
- **Z:** Codominance
1. **Trial V (PP x ww):**
- Offspring Phenotype: light purple
- This indicates incomplete dominance because the offspring are a blend of the dominant (purple) and recessive (white) traits, resulting in a new phenotype (light purple).
2. **Trial W (Ww x WW):**
- Offspring Phenotype: yellow
- This indicates complete dominance. Since WW and Ww both yield yellow offspring (the dominant phenotype), the recessive trait does not appear in the offspring.
3. **Trial X (PP x WW):**
- Offspring Phenotype: purple/yellow
- This suggests codominance, as both purple (dominant) and yellow (dominant) phenotypes are expressed separately in the offspring.
4. **Trial Y (pp x PP):**
- Offspring Phenotype: purple
- This illustrates complete dominance, as all the offspring will display the dominant purple phenotype since PP (purple) is crossed with pp (pink).
5. **Trial Z (WW x PP):**
- Offspring Phenotype: yellow/purple
- Similar to Trial X, this indicates codominance since both the yellow (from WW) and the purple (from PP) traits are displayed in the offspring.
Thus, matching the trials to the type of dominance:
- **V:** Incomplete dominance
- **W:** Complete dominance
- **X:** Codominance
- **Y:** Complete dominance
- **Z:** Codominance