A UT Arlington research team says their study of genetic information from more than 4,000 beetle species has yielded a new theory. The theory is about why some species lose their Y chromosome and others, such as humans, hang on to it. They call it the "fragile Y hypothesis." The biologists' idea is that the fate of the Y chromosome is heavily influenced by how meiosis, or the production of sperm, works in an organism. They believe the size of an area ...
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