How is the sex of the child determined in human beings?
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A child's gender (male or female) is determined by the chromosome that the male parent contributes. Females have XX sex chromosomes. Males have XY sex chromosomes. A male infant results if the male contributes his Y chromosome while a female infant results if he contributes his X chromosome.
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Sex of a child in humans is determined by the type of male haploid gamete that fuses with the female egg. During spermatogenesis, males produce two types of gametes, half of the sperms have an X chromosome and the other half have a Y chromosome. The female egg always has an X chromosome.
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