Article: Many Genes For Early Male Sperm Production Reside On The X Chromosome.

2001 APR 20 - (NewsRx.com & NewsRx.net) -- In an entirely counterintuitive result, scientists have found that nearly half of all genes related to the earliest stages of sperm production reside not on the male sex (Y) chromosome as expected, but on the X chromosome, a chromosome universally thought of as the female sex chromosome.

The finding, published in the April 2001 issue of Nature Genetics, comes as a big surprise and is causing scientists to rethink the "gender identity" of the X chromosome.

"Scientists and non-scientists alike are comfortable thinking about the Y chromosome as a specialist in male characteristics. By default, we've traditionally ...

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