How Are Male and Female Determined by Chromosomes?

Discover how sex chromosomes determine male and female traits in humans, including the roles of XY and XX pairs.

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Male and female determination is primarily based on the sex chromosomes an individual inherits. Males typically have an XY chromosome pair, while females have an XX chromosome pair. The presence of the Y chromosome triggers the development of male characteristics, largely through the SRY gene. In the absence of a Y chromosome, the development proceeds along the female pathway.

FAQs & Answers

  1. What is the role of the Y chromosome in sex determination? The Y chromosome triggers the development of male characteristics through the SRY gene.
  2. Can females have Y chromosomes? Typically, females have two X chromosomes and do not possess Y chromosomes, which are essential for male development.
  3. How do genes influence gender? Genes on the sex chromosomes dictate the development of male or female traits, primarily through the action of the SRY gene and other genetic factors.

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For more insights into genetics and human biology, check out our related videos on chromosome inheritance and the SRY gene's role in sex differentiation.

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