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  2. Sex verification in sports - Wikipedia

    en.wikipedia.org/wiki/Sex_verification_in_sports

    Sex verification in sports (also known as gender verification, or as gender determination or a sex test) occurs because eligibility of athletes to compete is restricted whenever sporting events are limited to a single sex, which is generally the case, as well as when events are limited to mixed-sex teams of defined composition (e.g., most pairs ...

  3. Sexual differentiation in humans - Wikipedia

    en.wikipedia.org/wiki/Sexual_differentiation_in...

    Chromosomal sex is determined at the time of fertilization; a chromosome from the sperm cell, either X or Y, fuses with the X chromosome in the egg cell. Gonadal sex refers to the gonads, that is the testicles or ovaries, depending on which genes are expressed. Phenotypic sex refers to the structures of the external and internal genitalia. [6]

  4. Cancer screening - Wikipedia

    en.wikipedia.org/wiki/Cancer_screening

    The objective of cancer screening is to detect cancer before symptoms appear, involving various methods such as blood tests, urine tests, DNA tests, and medical imaging. [ 1 ] [ 2 ] The purpose of screening is early cancer detection, to make the cancer easier to treat and extending life expectancy. [ 3 ]

  5. Sex verification and intersex athletes at the Olympic Games

    en.wikipedia.org/wiki/Sex_verification_and_inter...

    Women first competed at the Olympic Games in 1900, with an increased programme available for women to enter from 1924. [9] Prior to 1936, sex verification may have been done ad hoc, but there were no formal regulations; [2] the existence of intersex people was known about, though, and the Olympics began "dealing with" – acknowledged and sought to regulate [1] – intersex athletes ahead of ...

  6. Prenatal hormones and sexual orientation - Wikipedia

    en.wikipedia.org/wiki/Prenatal_hormones_and...

    Rh is a factor in blood, and in cases where the mother is absent of this (Rh-) while carrying an Rh+ fetus, an immune response may develop with deleterious effects. The Rh gene hypothesis is a strong candidate because not only does it involve the maternal immune response, but it has been implicated in handedness as well.

  7. Sex differences in humans - Wikipedia

    en.wikipedia.org/wiki/Sex_differences_in_humans

    Gender-based medicine, also called "gender medicine", is the field of medicine that studies the biological and physiological differences between the human sexes and how that affects differences in disease. Traditionally, medical research has mostly been conducted using the male body as the basis for clinical studies.

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