Sharks belong to a more basal group of vertebrates and their scales have been observed in the fossil record over the course of 450 million years of evolution, so the Sheffield researchers believe this indicates that all vertebrates, whether they live on land or in the sea, share the same developmental programme for skin, teeth and hair that has remained relatively unchanged throughout vertebrate evolution. (sciencedaily.com)
A lot of money which would have been used for other developmental programme is tied down to the scheme as the total student loans in the United States of America is now over $ 1,4 trillion. (myfinancekits.com)
«It shows that the protein products of a relatively «recent» retrovirus integration are present very early on in the embryo, and could be involved in some critical developmental programmes.» (newscientist.com)