The genetic code is degenerate. This phenomenon is illustrated by codon(s) for which of the following amino acids?

What is a repressor?

When tryptophan binds to trp repressor, this causes trp repressor to __________ to the trp operator and ________ transcription.

Which of the following phenomena would not be studied using ChIp-Seq?

A mutation in the lacZ gene alters β-galactosidase so it makes more allolactose compared with a normal β-galactosidase enzyme. How would this mutation affect the expression of the lac operon?

Which of the following is not a feature of a transcription factor?

The process is a utility providing hot water to a plant. The setpoint is the temperature of the hot water utility. The disturbances are system throughput and utility demand changes. Which is likely to be the more important control objective for this process: setpoint tracking or disturbance rejection.

Which of the following is not a reason why histones are removed (evicted) so that eukaryotic genes can be transcribed?

With regard to eukaryotic genes, the removal and/or displacement of histones is usually necessary for

The Avy allele of the Agouti gene involves the insertion of a transposable element upstream from the normal Agouti promoter. The transposable element carries a promoter that causes the over expression of the Agouti gene. Mice carrying this allele tend to have coat colors that are more yellow than mice that don’t have this transposable element. If pregnant female mice are fed a diet that contains chemicals that increase DNA methylation, how would you expect that this diet would affect the coat color of offspring carrying the Avy allele?