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Acquistapace - ch 8

Second half of 8

QuestionAnswer
What are the three parts of an operon? The Promoter, the operator and the structural genes
What is the purpose of the repressor gene? It codes for the enzyme that will bind to the operator site
For the induction operon, what is the default position? OFF
For the repression operon, what is the default position? ON
What is a base substitution mutation? (point mutation) Change in one base
nonsense mutation results in a nonsense codon
frameshift mutation insertion or deletion of one or more nucleotide pairs
What is the cause of thymine dimers UV radiation
What is the function of photolyase Separate thymine dimers
What is the difference between positive selection and negative selection? Positive selects mutant cells because they DO grow, while Negative selects mutant cells because they do NOT grow
Created by: BiologyBee
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