What is the impact of having 3x chromosomes instead of 2?

Thread starter mell
Start date Jan 9, 2006

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In individuals with a 3x chromosome configuration, there are two Barr bodies present in each cell. The number of Barr bodies is always one less than the number of X chromosomes. This process, known as lyonization, inactivates the extra X chromosomes, which is a key reason why individuals with three X chromosomes, often referred to as "superfemales," typically exhibit relatively normal phenotypes.

Jan 9, 2006

mell

i was just wondering if anyone knew is someone has a 3x chromosome instead of 2 how many barr bodies are in a cell?

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Jan 9, 2006

Curious3141

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Two Barr bodies. The no. of Barr bodies is always one less than the number of X chromosomes. The lyonisation of the superfluous Xs is the major reason why "superfemales" are relatively normal.

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