When F_1 program shown intermediate phenotype between dominant and recessive phenotypes such as gene interaction is called

Options

A. Complete dominance
B. Over dominance
C. pseudodominance
D. Incomplete dominance

Answer

To solve the question about the F1 generation showing an intermediate phenotype between dominant and recessive phenotypes, we will analyze the options provided and determine the correct answer step by step.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the term that describes a situation where the F1 generation exhibits an intermediate phenotype between dominant and recessive traits.

2. **Analyzing the Options**:
- **Complete Dominance**: In this scenario, the dominant allele completely masks the effect of the recessive allele in a heterozygous condition. Thus, the phenotype of the heterozygote is the same as that of the dominant homozygote. This does not fit our requirement of an intermediate phenotype.
- **Overdominance**: This refers to a condition where the heterozygote has a phenotype that is more extreme than either homozygote. This also does not describe an intermediate phenotype.
- **Pseudodominance**: This is a situation where a recessive trait appears to be dominant due to the lack of a dominant allele. This does not represent an intermediate phenotype either.
- **Incomplete Dominance**: In this case, the phenotype of the heterozygote is distinct and often intermediate between the phenotypes of the two homozygotes. This matches the description in the question.

3. **Conclusion**: Based on the analysis of the options, the correct answer is **Incomplete Dominance**. This term describes the situation where the F1 generation displays an intermediate phenotype between the dominant and recessive phenotypes.

### Final Answer:
The term for when the F1 generation shows an intermediate phenotype between dominant and recessive phenotypes is **Incomplete Dominance**.