Did Chickens Become Dinosaurs?

Researchers from Harvard medical checkup School and Beth Israel Deaconess Medical Center have captured and sequenced sm either pieces of collagen protein from a 68 million-year-old Tyrannosaurus rex. The protein fragmentsseven in all in allappear to most closely sum amino panelling sequences found in collagen of present daytime chickens. Are birds and dinosaurs argon evolutionarily related? Researchers from Harvard Medical School and Beth Israel Deaconess Medical Center captured and sequenced fiddling pieces of collagen protein from a 68 million-year-old Tyrannosaurus rex and a 160,000- to 600,000-year-old mastodon. The T. rex sequences atomic number 18 the oldest forever to be reported. dexterity Zina Deretsky, National Science Foundation) Most tidy sum take that birds evolved from dinosaurs, but thats all based on the architecture of the studys, said John Asara, director of the mass spectrum digest pith facility at Beth Israel Deaconess Medical School an d HMS instructor in pathology, who sequenced the protein fragments over the course of a year and a half(a) using highly sensitive mass spectrographic analysis methods. This allows you to exit the chance to say, Wait, they really ar related because their sequences are related. We didnt get enough sequences to definitively say that, but what sequences we got notice that idea. In another study appearing in the equalise issue of Science, Mary Schweitzer, of North Carolina State University, and colleagues found that extracts of T. rex tog out reacted with antibodies to chicken collagen, further suggesting the presence of birdlike protein in the dinosaur bones. The mere populace of such exceedingly ancient protein defies a longstanding assumption. When an maintenance organism dies, protein immediately begins to degrade and, in the case of fossils, is slowly replaced by mineral. This substitution process was thought to be fulfil by one million years. For centuries i t was believed that the process of fossiliza! tion washed-up every original material, consequently no one looked...If you take to get a full essay, order it on our website: OrderEssay.net

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