For an AAA (Lys) codon, how many of the possible bp substitution changes are synonoumous, missense,...
- For an AAA (Lys) codon, how many of the possible bp substitution changes are synonoumous, missense, nonsense?
- (4 pts) The repair of UV damage in bacteria is done by photolyase, which is activated by UV light. Why does this pairing of light and repair make sense?
Homework Answers
Hello,
AAA codes for lysine,if we replace the terminal A with G that is AAG,this codon will also code for lysine.If AAA is mutated to UAA then it will become nonsense codon that is stop codon.Similarly if AAG is mutated to UAG it will act as a nonsense codon.Missense are those substitutions in which change in even a single nucletide will lead to the production of a different amino acid.In this case if AAA is mutated to AAC or AAU,aspargine amino acid will be synthesised.If AAA is mutated to AGA then arginine will be synthesised.If AAA is mutated to AUA then isoleucine will form.Whereas,ACA will lead to the formation of threonine.
Hope this helps.
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For an AAA (Lys) codon, how many of the possible bp
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