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Some women have three, four, or even five X chromosomes per cell. Some women have only one. Some men can also have two or more X chromosomes, in addition to their Y. It's even possible to be biologically female and have the karyotype XY, or be biologically male with an XX karyotype.
The gene for 5-alpha reductase (the male pattern baldness gene) has been mapped to chromosome 5, not the Y chromosome. That means you can get it from any of your ancestors, it just won't show up in the women.
I think an important difference to recognize is what I understand is the difference between sex and gender. Sex is determined by chromosomes. So you have XX (female), XY (male) and other mutations/combinations (intersex). I believe gender is the "phenotype" as in how you act, feel, etc.
14 lut 2024 · Klinefelter Syndrome occurs when there is a at least one extra X chromosome in an individual with Y chromosomes. Clinical features are of varying severity, including signs of primary hypogonadism. The diagnosis is often missed due to the subtle clinical manifestation of the Klinefelter syndrome.
1 wrz 2017 · Beyond XX and XY: The Extraordinary Complexity of Sex Determination. A host of factors figure into whether someone is female, male or somewhere in between. By Amanda Montañez.
In humans and many other animal species, sex is determined by specific chromosomes. How did researchers discover these so-called sex chromosomes? The path from the initial discovery of sex ...
18 lip 2024 · There are two major types of sex chromosome in animals and plants including male heterogametic systems, whereby females have two X chromosomes (XX) and males have one X and one Y chromosome...
