Interesting Too

I'm just adding some more evidence against "Intelligent Design Theory" Recapitulation Theory (ontogeny recapitulates phylogeny) - States that stages in the evolution of the species are reproduced during the developmental stages of the individual (Chambers 1990).  For example, a human embryo would start out as a "fish" embryo then work it's way through its evolutionary ancestry till reaching a full human stage. Promoted by Ernst Haeckel in the late19th century.  This idea has been debunked for decades and is no longer in use. Embryo homology (comparative embryology, developmental homology) - closely related organisms go through similar stages in their embryonic development (Campbell 1993).  Embryonic structures can be adapted to different ultimate uses, for example, pharyngeal arches ("gill slits").  Or structures may be removed, for example, the tail of a human embryo. embryo3, originally uploaded by ReidAnderes.