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THE ROLE OF DEUTERIUM I N MOLECULAR EVOLUTION Oleg V. Mosin1 Department of Biotechnology, M. V. Lomonosov State Academy of Fine Chemical Technology, Vernadskogo Prospekt 86, 117571, Moscow, Russia 1. SUMMARY The role of deuterium in molecular evolution is most interesting question of nowdays science comprises two points mainly: the evolution of deuterium itself

as well as the chemical processes going with participation of deuterium. It is believed the big bang produce the universe that was much denser and hotter than it is now and made almost entirely of two main elements - hydrogen and helium. Deuterium itself was made only at a second stage of the beginning of the universe, namely through the collision of one neutron with one proton at a temperature of about one billion degrees; furthemore the

two formed deuterons in turn stuck together into helium nuclei, which contain two protons and two neutrons. It is considered, that during the formation of helium nuclei, almost all the deuterons combined to form helium nuclei, leaving a tiny remant to be detected today so that only one in 10.000 deuterons remained unpaired. Thus, deuterium serves as a particularly important marker. The quantity of deuterium in contemporary nature is approximately small and measured as no more than 0.015%

(from the whole number of hydrogen atoms) and depends strongly on both the uniformity of substance and the total amount of matter formed in course of early evolution. One may suggest, that the very reliable source of producing of deuterium theoretically may to be the numerical explosions of nova stars, but deuterium itself is very readily destroyed in those stars. If it was so, perhaps this was the answer to the question why the quantity of deuterium increased slitely

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