Intro to Genetics
Published on Nov 18, 2015
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You already know that DNA contains your genetic information.
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Look up the central dogma of molecular biology.
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The idea that DNA is the genetic material was not accepted at first.
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Erwin Chargaff discovered that within a species, the concentration of adenine was always about the same as that of thymine....
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The same was true for cytosine and guanine. These are "Chargoff's rules."
Rosalind Franklin and others used X rays to learn more about DNA's structure.
Watson and Crick usually are given credit for discovering DNA's structure, based on Franklin's work.
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Scientists concluded that hydrogen bonds between complementary base pairs hold together the two polynucleotide chains.
DNA replication is the process during which DNA is copied. It occurs during the synthesis (S) phase of the cell cycle.
DNA replication begins with an enzyme, DNA helicase, which breaks the bonds between complementary base pairs.
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