In a cross between full green pods (FFGG) and constricted yellow pods (ffgg), the percentage of heterozygous dominant offsprings in F1 is:

Options

A. `25%`
B. `50%`
C. `75%`
D. `100% `

Answer

To solve the problem of determining the percentage of heterozygous dominant offspring in the F1 generation from a cross between full green pods (FFGG) and constricted yellow pods (ffgg), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Parental Genotypes**:
- The genotype for the full green pods is **FFGG** (homozygous dominant for both traits).
- The genotype for the constricted yellow pods is **ffgg** (homozygous recessive for both traits).

2. **Determine the Gametes Produced by Each Parent**:
- The full green pods (FFGG) can only produce one type of gamete: **FG** (since both alleles are the same).
- The constricted yellow pods (ffgg) can only produce one type of gamete: **fg** (since both alleles are the same).

3. **Perform the Cross**:
- When we cross the gametes from both parents, we get:
- FGGG x fg = FfGg
- This means that all offspring will have the genotype **FfGg**.

4. **Determine the Genotype of the Offspring**:
- The genotype **FfGg** indicates that the offspring are heterozygous for both traits (Ff for the pod shape and Gg for the pod color).

5. **Calculate the Percentage of Heterozygous Dominant Offspring**:
- Since all offspring are FfGg, they are all heterozygous dominant.
- Therefore, the percentage of heterozygous dominant offspring in the F1 generation is **100%**.

### Final Answer:
The percentage of heterozygous dominant offspring in F1 is **100%**.

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