HHMI Bulletin | February 2007
Sugar and spice and X chromosome twice—that’s what girls are made of, despite the fact that this double dollop of X chromosomes can be deadly for females of any species.
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Sugar and spice and X chromosome twice—that’s what girls are made of, despite the fact that this double dollop of X chromosomes can be deadly for females of any species.
read story (pdf)
Size matters–at least for worm sperm. For tiny soil nematodes, big sperm have the edge over smaller sperm in fertilizing a mate’s eggs, according to University of Arizona biologists Craig LaMunyon and Samuel Ward. read story