Which of the following statement is incorrect?

Options

A. for every hormone there is a gene
B. for every protein there is a gene
C. for production of every enzyme there is a gene
D. for every protein there is a gene

Answer

To determine which statement is incorrect, we need to analyze each of the given statements regarding genes and their relationship with hormones, proteins, enzymes, and fat molecules.

### Step-by-Step Solution:

1. **Understanding the Relationship Between Genes and Proteins**:
- Genes are segments of DNA that code for proteins. Each gene typically corresponds to a specific protein.

2. **Analyzing the Statements**:
- **Statement 1**: For every hormone, there is a gene.
- Hormones are often proteins (like insulin), so this statement is generally true.
- **Statement 2**: For every protein, there is a gene.
- This statement is also true, as proteins are synthesized based on the information encoded in genes.
- **Statement 3**: For the production of every enzyme, there is a gene.
- Enzymes are proteins that catalyze biochemical reactions, so this statement is true as well.
- **Statement 4**: For every molecule of fat, there is a gene.
- This statement is incorrect. Fat molecules (lipids) are not proteins and do not have specific genes coding for them in the same way that proteins do.

3. **Conclusion**:
- The incorrect statement is: "For every molecule of fat, there is a gene."

### Final Answer:
The incorrect statement is: **For every molecule of fat, there is a gene.**

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