In complete dominance

Options

A. `F_(1)` phenotype is in between the two parents
B. `F_(1)` phenotype is mixture of two parents
C. `F_(1)` generation resembles both parents
D. all of these

Answer

### Step-by-Step Text Solution:

1. **Understanding Complete Dominance**:
- Complete dominance occurs when one allele (the dominant allele) completely masks the effect of another allele (the recessive allele) in a heterozygous individual. This means that the phenotype of the organism will reflect only the dominant trait.

2. **Analyzing the Statements**:
- We have three statements to evaluate regarding the F1 generation in complete dominance:
1. F1 phenotype is in between two parents.
2. F1 phenotype is a mixture of two parents.
3. F1 generation resembles both parents.

3. **Evaluating Statement 1**:
- The first statement claims that the F1 phenotype is in between two parents. In complete dominance, the dominant trait will be expressed, and the recessive trait will not be visible. Therefore, this statement is **incorrect** because the F1 phenotype does not appear as a blend but rather shows the dominant trait.

4. **Evaluating Statement 2**:
- The second statement suggests that the F1 phenotype is a mixture of two parents. This is also **incorrect** because, in complete dominance, the dominant trait overshadows the recessive trait, meaning the offspring will not show a mixture but rather only the dominant phenotype.

5. **Evaluating Statement 3**:
- The third statement states that the F1 generation resembles both parents. This statement is **incorrect** as well, since the F1 generation will only resemble the parent with the dominant trait.

6. **Conclusion**:
- After evaluating all three statements, we conclude that none of the statements accurately describe the F1 generation in complete dominance. The correct understanding is that the dominant trait is the only one expressed in the phenotype of the F1 generation.