Chromosomes Determine Girl Child Sex
The sex of a child is determined by the pair of sex chromosomes inherited from the parents.
In humans, females typically have two X chromosomes (represented as XX), while males typically have one X and one Y chromosome (represented as XY).
- When a sperm carrying an X chromosome fertilizes an egg (which always contains an X chromosome), the resulting combination is XX.
- This XX chromosomal configuration leads to the development of a girl child.
- Conversely, if a sperm carrying a Y chromosome fertilizes the egg, the resulting combination is XY, leading to the development of a boy child.
Therefore, the set of chromosomes that leads to the birth of a girl child is XX.
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