Homehttps://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/Sciencehttps://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/Molecular analysis of anchiornis feathers gives traces to the origin of the aircraft
Molecular analysis of anchiornis feathers gives traces to the origin of the aircraft
An international research group has performed molecular analysis of fossil feathers from a small, feathered dinosaur from the law. Their research could help scientists find out when feathers developed flight capacity during the transition to dinosaur / bird.
Anchiornis was a small, feathered, four-winged dinosaur who lived in what is now China about 1
60 million years ago – nearly 10 million years before Archeopteryx, the first recognized bird. A team of researchers from Nanjing Department of Geology and Paleontology, North Carolina State University and the University of South Carolina analyzed Anchiornis feathers to see how they differ at the molecular level of the younger fossil birds and modern birds.
"Modern bird feathers consist primarily of beta-keratin (β-keratin), a protein also found in the skin, claws and beak of reptiles and birds. Spring differs from these other β-keratin-containing tissues because the spring protein is modified on a way that makes them more flexible, "says Mary Schweitzer, a professor of life sciences at the NC state with a joint agreement in North Carolina's Faculty of Science and co-author of a paper describing the research. 19659005] "At some point during the development of feathers, one of the β-keratin genes underwent a deletion event, making the resulting protein slightly smaller. This deletion changed the feather biophysics to something more flexible – a flight requirement. find out when and in which organisms a deletion event occurred, we will get a better understanding of when the flight evolved during the transition from dinosaurs to birds. "