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How Dinosaurs May Have Evolved Into Birds

July 12,2017

How dinosaurs may have evolved into birds

Animatronic Dinosaur


Evolutionary biologists have suspected that anatomical differences within and between species are caused by cis-regulatory elements (CREs). CREs are regions of genome DNA that do not code for proteins, and control morphology and other traits by regulating genes.

The international group of researchers analyzed the genomes of 48 avian species that represent the evolutionary history of modern birds and compared them to many other vertebrates to find DNA sequences specific to avians.

They also analyzed the ASHCEs sequences and found they are very similar. This means the emergence of ASHCEs can possibly be traced back all the way to the era of dinosaurs.

Because the ASHCEs in genes such as Sim1 were highly conserved and therefore largely unchanged by evolution since the dinosaur era, this suggests CREs such as ASHCEs were vital in developing bird-specific traits and may have driven the transition of dinosaurs to birds.


Mr. Zhou1

0813-5202669

Mr. Zhou

0813-5202669

Mr. Zhou222

0813-5202669

Mr. Zhou

0813-5202669