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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.
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14 gru 2023 · Autosomes are all chromosomes that are not sex chromosomes. Many people are born with variations in sex chromosomes, also called X and Y variations or sex chromosome aneuploidy (SCA).
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 ...
30 lip 2022 · This genetic information is our DNA, which is packaged into chromosomes. Each chromosome contains information about specific traits of an organism. These chromosomes can be sorted into two categories: autosomes and sex chromosomes.
26 paź 2020 · Some people have differing sex chromosomes, such as those who are born with an extra X chromosome (XXY) or who are missing an X chromosome (XO). Or, some people with XX or XY chromosomes might have physical characteristics that don’t seem to align with what’s typically expected of their DNA.
