which one is homogametic ?

Options

A. Human child
B. Human embryo
C. Human male
D. Human female

Answer

To determine which option is homogametic among the given choices (human child, human embryo, human male, human female), we need to understand the definitions of homogametic and heterogametic organisms.

### Step-by-Step Solution:

1. **Understand the Terms**:
- **Homogametic**: Organisms that produce only one type of gamete. For example, in humans, females produce only X gametes.
- **Heterogametic**: Organisms that produce two different types of gametes. For example, in humans, males produce both X and Y gametes.

2. **Analyze the Options**:
- **Human Child**: A human child has not yet reached puberty and does not produce gametes. Therefore, it cannot be classified as homogametic.
- **Human Embryo**: Similar to a human child, a human embryo is not capable of producing gametes. Thus, it is also not homogametic.
- **Human Male**: Males have XY sex chromosomes, which means they produce two types of gametes (X and Y). Therefore, they are heterogametic.
- **Human Female**: Females have XX sex chromosomes, meaning they produce only one type of gamete (X). Thus, they are homogametic.

3. **Conclusion**:
- Based on the analysis, the only option that is homogametic is **Human Female** (option D).

### Final Answer:
**Human Female** is the homogametic organism.

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