Which condition zygotic cell will from normal human female child

Options

A. XX chromosomes
B. Y- chromosome
C. X-chromosome
D. Xychromosomes

Answer

To determine which condition of the zygotic cell will form a normal human female child, we can analyze the options provided based on our understanding of human genetics.

### Step-by-Step Solution:

1. **Understanding Chromosomal Composition**:
- In humans, sex is determined by the combination of sex chromosomes. Females typically have two X chromosomes (XX), while males have one X and one Y chromosome (XY).

2. **Analyzing the Options**:
- **Option A: XX chromosomes**: This combination indicates a female. If a zygote has two X chromosomes, it will develop into a female child.
- **Option B: Y chromosome**: A single Y chromosome does not constitute a complete zygotic cell. It is part of the male chromosome pair (XY) and cannot form a zygote alone.
- **Option C: X chromosome**: A single X chromosome also cannot form a zygote. A zygote requires two sex chromosomes.
- **Option D: XY chromosomes**: This combination indicates a male. A zygote with XY chromosomes will develop into a male child.

3. **Conclusion**:
- The only option that represents the chromosomal condition necessary for a normal human female child is **Option A: XX chromosomes**. Therefore, a zygote with XX will develop into a female child.

### Final Answer:
The correct condition for a zygotic cell to form a normal human female child is **XX chromosomes (Option A)**.

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