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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.
Turns out when I was but a wee little egg, an SRY gene got tagged onto my X chromosome and I got hoodwinked into a dudes body. Unfortunately enough, I also learned that isn’t really linked with transness. Many men with two X chromosomes are perfectly secure in their gender so I’ve apparently been double hoodwinked…
The X chromosome is one of the two sex chromosomes in many organisms, including mammals, and is found in both males and females. It is a part of the XY sex-determination system and XO sex-determination system.
Typically, females have two of the same kind of sex chromosome (XX), and are called the homogametic sex. Males typically have two different kinds of sex chromosomes (XY), and are called the heterogametic sex. [1]
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 ...
14 gru 2023 · Most of us were raised with the idea that there are two sexes: male and female. We’re usually told that people with XY chromosomes are male and people with XX chromosomes are female.
