What percentage of human genome codes for proteins?

Options

A. `gt 5%`
B. 5-10%
C. gt 2%
D. lt 2%

Answer

To determine what percentage of the human genome codes for proteins, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Composition of the Human Genome**:
- The human genome consists of a vast amount of genetic material, which includes both coding and non-coding sequences.

2. **Identify Non-Coding Sequences**:
- It is known that approximately 98% of the human genome consists of non-coding sequences. Non-coding sequences do not code for proteins.

3. **Calculate Coding Sequences**:
- Since 98% of the genome is non-coding, the remaining percentage must be coding sequences. This means that:
\[ \text{Percentage of coding sequences} = 100\% - 98\% = 2\% \]

4. **Conclusion**:
- Therefore, we conclude that less than 2% of the human genome codes for proteins. This small fraction is responsible for the synthesis of proteins that perform various functions in the body.

### Final Answer:
Less than 2% of the human genome codes for proteins.