Does Ontogeny Recapitulate Phylogeny?

I think strictly speaking, ontogeny recapitulates phylogeny does mean that the embryo will pass through stages similar to the adult stages of its ancestors, and I think this is what Haeckel proposed. But the weaker claim is absolutely true. I hate in when creationists say "ontogeny doesn't recapitulate phylogeny" when you make the weaker claim , as if that is a rebuttle.A good site for videos and pictures of embryology and discussions on this subject is NOVA (as always).NOVA Online/Odyssey of Life/Timing is EverythingOrganisms with a recent common ancestry are going to have similar developmental pathways. Here's a picture of a chimp and human embryo.[This message has been edited by JustinCy, 03-25-2004]