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Learn how sex chromosomes determine biological sex and how they differ from gender identity Males have one x chromosome and one smaller y chromosome, which mostly contains genes for male development. Find out how x and y chromosomes work, what genes they carry, and what conditions are linked to them.
Learn about the xy system of sex determination, which is used by many mammals, including humans, some insects, plants and fish The xx and xy chromosomes determine biological sex in humans and several other species Find out how the y chromosome and the sry gene influence male development, and how xy sex determination differs from zw and other systems.
Sex chromosome, either of a pair of chromosomes that determine whether an individual is male or female
The sex chromosomes of human beings and other mammals are designated by scientists as x and y In humans the sex chromosomes consist of one pair of the total of 23 pairs of chromosomes. Xx and xy chromosomes are only part of the story Discover how sex chromosomes vary naturally and why biological sex isn't always binary
Learn about dsds and intersex variations. Learn how the x and y sex chromosomes determine our biological sex and how intersex people differ from typical males and females Explore the history and science of sex chromosomes with examples and illustrations. Furthermore, xx chromosomes occur in homogametic sex while xy chromosomes occur in the heterogametic sex.
