Chapter 6 was a bit interesting. I sort of felt like some of this was a bit repetitive, yet none the less it helped further my understanding so no harm there.

I enjoyed the bit of comedy there was in this chapter when he mentioned trying to compare a human to a sponge.

The three germ layers was pretty neat as well it isn't too difficult to remember, ectoderm, endoderm, mesoderm.

Another cool thing was there was practically a tube within another tube. I also liked the experiment where Mangold produced twins.

I also found the face in the front, anus in the back funny because I never really bothered to look at it that way. It's interesting how it's symmetrical with top/bottom, left/right, front/back.