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Sex, gender and sexuality

Your sex

Your sex is based on the biological and physiological characteristics used to define people as male or female. These include:

  • X and Y chromosomes
  • whether you have external or internal sex organs (penis or vagina)
  • types and levels of hormones
  • hair growth
  • breast development

Some people are born intersex and have characteristics that don't fit typical definitions of male and female, although this is rare.

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