Sean Carroll, a UW-Madison molecular biologist, has at least shed light on what happens at the genetic level to make males and females of any species look so different. Though the work was done by studying markings on fruit flies, the same genetic mechanism is likely responsible for the male moose having big antlers, male lions having impressive manes, and male peacocks having those long and showy tail feathers. In humans, the process could help explain how men end up being larger than women. And hairier.
You can see the whole story “What makes a guy a guy?” in the Wisconsin State Journal.
What I want to know is what makes little boys love trucks, young guys love sports with balls and all guys love beer & pizza?
1 comment:
waiting to hear your take on Democratic convention....isn't it a bid odd that we call Obama black when he is indeed, biracial? what do you think?
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