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Unformatted text preview: that the mutant resulted from a single base change in the DNA encoding the gene, what mutation took place at the DNA level and how did that affect the mRNA and protein sequence? 4. The mRNA for a particular protein is unusual in that it lacks any cytosine residues. What amino acids might it contain and which ones could it not possess? Genetics 466 Fall 2008 Sean Carroll 2 5. Tryptophan is a relatively rare amino acid in proteins, can you think of one reason why? 6. Four different codons encode the amino acid glycine. Taking into account wobble rules, how many tRNAs are necessary for glycine and what might their anticodon sequences be? 7. A pathogenic bacterium is found that is newly resistant to puromycin. What is the likely cause of this resistance? 8. You’ve isolated the messenger RNA for one gene but don’t know which strand of DNA serves as a template for transcription. How would you find out?...
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This note was uploaded on 03/26/2010 for the course GENETICS 466 taught by Professor Staff during the Fall '08 term at Wisconsin.
- Fall '08