Some researchers examined prehistoric fossils and some tweaked the question a little bit, but everyone came upon the same ...

This is an embryonic chicken penis (pseudocolored red) viewed under a scanning electron microscope. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to ...

Studying how neural crest cells journey through the embryo, this Caltech developmental biologist has revealed how they form major cell types, including peripheral neurons, bone, and smooth muscle. In ...

In summary: egg predates chicken. However ... U.S. have discovered that this animal contained genetic instructions from embryonic development, meaning that the eggs existed even before life ...

IN the midbrain of the chicken embryo a close relationship has been demonstrated between aerobic glycolysis and cell division 1, from which it can be inferred that growth is dependent on aerobic ...