Researchers discover how model organism Tetrahymena plays roulette with seven sexes

Tuesday, March 26, 2013 - 19:30 in Biology & Nature

It's been more than fifty years since scientists discovered that the single-celled organism Tetrahymena thermophila has seven sexes. But in all that time, they've never known how each cell's sex, or "mating type," is determined; now they do.

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