What experiment did Yanofsky do to demonstrate colinearity between the gene and the protein?
Yanofsky analyzed mutations in the trpA gene and ordered them by using transduction. He also determined the amino acid sequence of the altered gene products. By this means, he demonstrated an exact correlation between the sequence of mutation sites and the sequence of altered amino acids. 6. What is the difference between complementation and recombination? 7. Complete the following table by filling in the plaque types: 8. A common weed, St.-John’s-wort, is toxic to albino animals. It also causes blisters on animals that have white areas of fur. Suggest a possible genetic basis for this reaction. 9. In humans, the disease galactosemia causes mental retardation at an early age because lactose in milk cannot be broken down, and this failure affects brain function. How would you provide a secondary cure for galactosemia? Would you expect this phenotype to be dominant or recessive? Lactose is composed of one molecule of galactose and one molecule of glucose. A secondary cure would result if
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