Tetrasomy X

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Notion

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Science and technology

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What Wikipedia says

Tetrasomy X, also known as 48,XXXX or Poly-X Klinefelter, is a chromosomal disorder in which a female has four, rather than two, copies of the X chromosome.

Excerpt from the Wikipedia article “Tetrasomy X”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Akiyo Hineno, Tomoki Kosho, Hiroyuki Kato, Yoshiki Sekijima, CC BY 4.0, via Wikimedia Commons.