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Dna: The Making
Essay specific features
Written by:
Irene Z
Date added:
November 4, 2012
Level:
University
Grade:
A
No of pages / words:
7 / 1900
Was viewed:
8043 times
Rating of current essay:
Essay content:
Two American geneticists, George Wells Beadle and Edward Lawrie Tatum,
provided one of the first important clues in the early 1940s. Working with the
fungi Neurospora and Penicillium, they found that "genes direct the formation of
enzymes through the units of which they are composed." (Annas 1996) Each unit (a
polypeptide) is produced by a specific gene...
displayed 300 characters
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This work launched studies into the
chemical nature of the gene and helped to establish the field of molecular
genetics. "The fact that chromosomes were almost entirely composed of two kinds
of chemical substances, protein and nucleic acids, had long been known. Partly
because of the close relationship established between genes and enzymes, which
are proteins, protein at first seemed the fundamental substance that determined
heredity...
displayed 300 characters
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