[FormerACLUmember]

Developmental Biology 101.

[tallhappy]

Actually, superstitious pseudo mysticism incorporated in to Biology a century ago that still hangs on.

[hootiebird]

Exactly, I remember leaning something similar to this back in high school biology in the early 90's. We compared images of developing embryos during different developmental stages and how similar a human embryo was in appearance to a pig or fish embryo at different times.