The phenomenon, in which an alleles of one gene suppresses the activity of an allele of another gene, is known as

Options

A. Epistasis
B. Dominance
C. Suppression
D. Inactivation

Answer

To solve the question regarding the phenomenon where an allele of one gene suppresses the activity of an allele of another gene, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for a specific genetic phenomenon where one gene's allele can suppress the function of another gene's allele.

2. **Identify the Options**: The options provided are:
- Epistasis
- Dominance
- Suppression
- Inactivation

3. **Analyze Each Option**:
- **Epistasis**: This is a genetic interaction where the effect of one gene is modified or completely suppressed by another gene. This fits the description in the question.
- **Dominance**: This refers to a situation where one allele masks the effect of another allele at the same locus. It does not involve two different genes, so it is not the correct answer.
- **Suppression**: While this term suggests that one gene can suppress another, it does not specifically refer to the interaction between different genes as described in the question.
- **Inactivation**: This term refers to a gene being turned off or rendered non-functional, which is different from suppression of activity.

4. **Select the Correct Answer**: Based on the analysis, the correct answer is **Epistasis**. This term accurately describes the phenomenon where one gene's allele suppresses the activity of another gene's allele.

5. **Conclusion**: The phenomenon in which an allele of one gene suppresses the activity of an allele of another gene is known as **Epistasis**.