________% of the genome codes for protein in human beings.

Options

A. 0.98
B. 0.5
C. 0.24
D. `lt2%`

Answer

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

### Step-by-Step Solution:

1. **Understanding the Human Genome**: The human genome consists of approximately 3 billion nucleotide base pairs. This includes both coding and non-coding regions.

**Hint**: Familiarize yourself with the structure of the human genome and the distinction between coding and non-coding DNA.

2. **Human Genome Project Findings**: The Human Genome Project, which was completed around May 2006, sequenced the entire human genome and provided insights into the number of genes and their functions.

**Hint**: Research the Human Genome Project to understand its significance and findings.

3. **Number of Genes**: It was determined that the human genome contains about 30,000 genes. Initially, estimates suggested there could be between 80,000 to 140,000 genes, but this was revised down.

**Hint**: Remember the approximate number of genes in the human genome and how initial estimates were corrected.

4. **Protein-Coding Genes**: Out of the 30,000 genes, it was found that less than 2% of these genes are structural genes that actually code for proteins.

**Hint**: Focus on the percentage of genes that are involved in coding for proteins versus those that are not.

5. **Conclusion**: Therefore, the answer to the question is that less than 2% of the human genome codes for proteins.

**Hint**: Summarize your findings to arrive at the final answer clearly.

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