the sex of a child is determined by
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• A sex chromosome is a type of chromosome that participates in sex determination.
• Humans and most other mammals have two sex chromosomes, the X and the Y.
• Females have two X chromosomes in their cells, while males have both X and a Y chromosomes in their cells.
• Egg cells all contain an X chromosome, while sperm cells contain an X or Y chromosome.
•This arrangement means that it is the male that determines the sex of the offspring when fertilization occurs.
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