PhysOrg Posted June 6, 2013 Share Posted June 6, 2013 This is an embryonic chicken penis (pseudocolored red) viewed under a scanning electron microscope. Credit: C.L. Perriton and M.J. Cohn In animals that reproduce by internal fertilization, as humans do, you'd think a penis would be an organ you couldn't really do without, evolutionarily speaking. Surprisingly, though, most birds do exactly that, and now researchers reporting in the Cell Press journal Current Biology on June 6 have figured out where, developmentally speaking, birds' penises have gone.Read the full article on PhysOrg Link to comment Share on other sites More sharing options...
ScienceDaily Posted June 6, 2013 Share Posted June 6, 2013 In animals that reproduce by internal fertilization, as humans do, you'd think a penis would be an organ you couldn't really do without, evolutionarily speaking. Surprisingly, though, most birds do exactly that, and now researchers have figured out where, developmentally speaking, birds' penises have gone. Read the full article on ScienceDaily Link to comment Share on other sites More sharing options...
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