Feathers, which are the most complex integumental structures known in the animal kingdom, without doubt required coordinated changes in numerous genes.
“The calyx appeared,” says Dr. Rob Raphael. A more magical explanation could hardly be fabricated.
Evolutionary biologists often argue that vertebrate embryos develop in highly similar manners, reflecting their common ancestry.
Boom! There goes the “exquisitely documented” evolution of turtles. Sorry, Professor Dave.
The tuatara genome is 5GB, making it enormous relative to other vertebrates — and full of surprises.