Evolution theory held that women’s pelvises should have been shaped by the obstetrical dilemma (birthing babies with big heads safely) and thus should tend to be uniform. But
The shape of a mother’s birth canal is a tug-of-war between two opposing evolutionary forces: It needs to be wide enough to allow our big-brained babies to pass through, yet narrow enough to allow women to walk efficiently. At least that’s been the common thinking. But a new study reveals birth canals come in a variety of shapes in women around the world. Erica Tennenhouse, “Birth canals are different all over the world, countering a long-held evolutionary theory” at Science
Paper. (open access)
Funny, the things that happen when people actually test evolution theories. Merely plausible doesn’t work any more.
Follow UD News at Twitter!
See also: Rob Sheldon on the failure of selfish gene theory and peacocks, as well as bees