A gamete contains

Options

A. Many alleles of a gene
B. All alleles of a gene
C. Two alleles of a gene
D. One allele of a gene.

Answer

### Step-by-Step Solution:

1. **Understanding Gametes**:
- Gametes are the reproductive cells (sperm and egg) that unite during fertilization to form a new organism.

2. **Alleles and Genes**:
- A gene is a segment of DNA that codes for a specific trait, and alleles are different versions of a gene. For example, a gene for flower color may have a purple allele and a white allele.

3. **Diploid and Haploid Cells**:
- Most organisms are diploid, meaning they have two alleles for each gene (one from each parent). However, gametes are haploid, meaning they contain only one allele for each gene.

4. **Separation of Alleles**:
- During the formation of gametes through meiosis, the two alleles for each gene segregate so that each gamete receives only one allele. This is known as the Law of Segregation.

5. **Conclusion**:
- Since each gamete contains only one allele from each gene pair, the correct answer to the question "A gamete contains" is **one allele of a gene**.

### Final Answer:
- **One allele of a gene (Option D)**.

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