A gamete normally 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 in animals) that are involved in sexual reproduction. They are produced through a process called meiosis.

2. **Ploidy of Gametes**:
- Gametes are haploid, meaning they contain only one set of chromosomes. In humans, this means they have half the number of chromosomes compared to somatic (body) cells, which are diploid.

3. **Alleles in Gametes**:
- Each gene in an organism can have different versions called alleles. Since gametes are haploid, they can only carry one allele for each gene.

4. **Law of Segregation**:
- According to Mendel's Law of Segregation, during the formation of gametes, the two alleles for a gene segregate from each other so that each gamete receives only one allele. This means that when gametes are formed, each will contain one allele of a gene.

5. **Conclusion**:
- Therefore, a gamete normally contains **one allele of a gene**. This is the correct answer to the question.

### Final Answer:
A gamete normally contains **one allele of a gene**.

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