Two dominant independently assorting genes react with each other. They are

Options

A. Collaborative genes
B. Complementary genes
C. Duplicate genes
D. Supplementary genes

Answer

To solve the question regarding the two dominant independently assorting genes that react with each other, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Terms**:
- We need to identify what "dominant independently assorting genes" means. Dominant genes are those that express their traits even in the presence of a recessive allele. Independently assorting genes are those that segregate independently during gamete formation.

2. **Identify the Interaction**:
- The question states that these genes "react" with each other. This implies a specific type of interaction between the two genes.

3. **Explore the Options**:
- The options provided are:
- A) Collaborative genes
- B) Complementary genes
- C) Duplicate genes
- D) Supplementary genes

4. **Analyze Each Option**:
- **Collaborative Genes**: These genes work together to produce a specific function but do not necessarily interact in the way described.
- **Complementary Genes**: These genes interact in such a way that the presence of both is necessary for the expression of a particular trait. This fits the description of the genes reacting with each other.
- **Duplicate Genes**: These are genes that perform the same function but are located on different chromosomes. They do not interact in the same way as complementary genes.
- **Supplementary Genes**: These genes enhance or modify the expression of another gene but are not the primary interacting genes.

5. **Conclusion**:
- Based on the analysis, the correct answer is **B) Complementary genes**, as they are the ones that react with each other in a way that requires both to express a specific trait.

### Final Answer:
The two dominant independently assorting genes that react with each other are called **Complementary genes**.