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You have identified a mutation in a bacterial operon, that prevents binding of the sigma subunit to the DNA. What functional DNA sequence, has likely been mutated in this instance?

In what direction is a polypeptide built?

What does it mean for two codons to be synonymous?

Which of the following is NOT a spontaneous mutation event?

Which position of a codon is most often degenerate?

During the elongation phase of translation, a reaction is catalyzed by peptidyl transferase activity, the polypeptide chain, which is attached to a tRNA in the ____________, becomes bound via _______________ to an amino acid attached to a tRNA in the _____________.

In the diagram below, where does the RNA polymerase II bind?

Imagine a mutation  occurrs that weakens or eliminates motifs in the core promoter. Which of the following best describes the outcome?

The genetic code consists of 61 sense codons that specify the 20 common amino acids. Wobble at the third position of the codon allows different codons to specify the same amino acid. Complete the following sentence: Due to wobble, a single ________ can pair with more than one ________.

Use the codon table to describe the type of mutation in terms of how it would affect the amino acid sequence. Wildtype:  5′-UAC AAA AUA CAG CGG-3′ Mutant:     5′-UAC AAG AUA CAG CGG-3′