. The info portion of DNA is in the specific sequences of nucleotides along DNA strandsProteins are the links between genotype and phenotypeBeadle and Tatum established link between genes and enzymes. Beadle and Tatum. They mutated Neurospora crassa, a bread mold, with X-rays and screened the survivors for mutants that differed in their nutritional needsWild-type Neurospora can grow on a minimal medium of agar, inorganic salts, glucose, and the vitamin biotin.
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