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Unformatted text preview: Crossing the mutated fungi with non-mutated forms produced spores which were then grown on media supplying only one of the 20 essential amino acids. If a spore lacked the ability to synthesize a particular amino acid, such as Pro (proline), it would only grow if the Proline was in the growth medium. Biosynthesis of amino acids (the building blocks of proteins) is a complex process with many chemical reactions mediated by enzymes, which if mutated would shut down the pathway, resulting in no-growth. Beadle and Tatum proposed the "one gene one enzyme " theory. One gene codes for the production of one protein. "One gene one enzyme" has since been modified to "one gene one polypeptide " since many proteins (such as hemoglobin) are made of more than one polypeptide....
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This note was uploaded on 11/29/2011 for the course BIO BSC1010 taught by Professor Gwenhauner during the Fall '10 term at Broward College.
- Fall '10