The genes that are responsible for directing the sequences of amino acids for a given protein are

Options

A. Initiator
B. Operator
C. Regulator
D. Repressor

Answer

To solve the question regarding which genes are responsible for directing the sequences of amino acids for a given protein, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**:
The question asks about the genes that direct the sequence of amino acids in proteins. This implies we need to identify a type of gene that plays a role in the synthesis of proteins.

**Hint**: Focus on the role of genes in protein synthesis.

2. **Identifying Key Terms**:
The terms "sequence of amino acids" and "protein" are crucial. Amino acids are the building blocks of proteins, and the sequence of these amino acids determines the structure and function of the protein.

**Hint**: Recall the central dogma of molecular biology, which involves DNA, RNA, and protein.

3. **Reviewing Gene Types**:
The options provided are initiator, operator, regulator, and repressor. We need to understand what each of these types of genes does:
- **Initiator**: Typically refers to a sequence that starts transcription.
- **Operator**: A segment of DNA that a repressor can bind to, inhibiting transcription.
- **Regulator**: A gene that controls the expression of other genes.
- **Repressor**: A protein that suppresses the expression of a gene.

**Hint**: Think about which gene type is involved in the overall regulation of gene expression.

4. **Analyzing the Role of Regulator Genes**:
Regulator genes are essential because they control the expression of other genes, including those that code for proteins. They can influence the transcription of genes that determine the amino acid sequences in proteins.

**Hint**: Consider how gene regulation affects protein synthesis.

5. **Conclusion**:
Based on the analysis, the correct answer to the question is that the genes responsible for directing the sequences of amino acids for a given protein are **regulator genes**.

**Final Answer**: Regulator genes.