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Real Dinosaur from Chicken created in the US - VIDEO PDF Print E-mail
Friday, 22 May 2015 00:00

American biologists have created a chicken embryo with the muzzle of the dinosaurs - suppressing the development of proteins in which embryos formed in beaks. On the experiment reported in the journal Evolution, and briefly outlines findings Nature News & Comment.

The aim of the scientists was not the creation of mutants and the resurrection of the genetically engineered dinosaurs - they sought to understand how the molecular level was a process of transformation in its beak mugs reptiles (the future bird). It is known that beak lizards originated from two small bones (maxillary), stretched out and joined together in a single structure.

Biologists led by Arhat Abzhanova Harvard and Bharti-Anjani Bhullarom (Bhart-Anjan Bhullar) from Chicago compared the development of the embryos of modern birds and reptiles. It turned out that in the body of the animal groups are differentially expressed proteins FGF and Wnt: reptiles are active in two small areas of the fetus, is transformed in the face, and birds - in a broad band on the same site.

To test this hypothesis, scientists introduced into chicken embryo chemicals that block the activity of FGF proteins and Wnt. According to the authorities of the University approved the study protocol, the mutant embryos is not brought before the birth: the changes in their anatomy tracked on the last days of fetal development.

Some birds premaxillae stay connected, while others - individual and short. Digital models of skulls revealed that bones of many of them turned out to be more like cranial bones pervoptits (such as Archaeopteryx) and dinosaurs (like Velociraptor) than conventional chicken bones.

However, to identify the genetic basis of the beaks is far: these may be the genes encoding FGF and Wnt, and genes related biochemical reactions - as well as "regulating" DNA, which affects gene expression.

Known for his project grow Dinosaur Chicken paleontologist Jack Horner (Jack Horner) and took a job Abzhanova Bhullara enthusiastically. Horner has identified the genetic mutation responsible for the disappearance of the tail in modern birds - but to influence them in practice has not yet been (involved in the formation of the tail too many components). Manipulation with proteins responsible for embryo development, it is a very valuable method of paleontologist.


НАЖМИТЕ ЗДЕСЬ ДЛЯ ПРОСМОТРА ВСЕГО СПИСКА НОВОСТЕЙ О НЕОБЫЧНЫХ ЯВЛЕНИЯХ>>>

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