Question

Determine the outcome for the lac operon genotype shownbelow:

I^sP⁺O^cZ⁺

Assume lactose is present.

Select one:

Functional beta-galactosidase is produced constitutively.

Functional beta-galactosidase is NOT produced.

Determine the outcome for the lac operon genotype shownbelow:

I^-P⁺O^cZ⁺

Assume lactose is present.

Select one:

Functional beta-galactosidase is produced constitutively.

Functional beta-galactosidase is NOT produced.

Mark all that are true about the lac operon.

Select one or more:

CAP and cAMP bind to increase transcription of structuralgenes.

RNA polymerase binding occurs best if CAP is present and cAMP isabsent.

The presence of glucose decreases CAP-cAMP binding to theoperon.

The presence of additional cAMP decreases CAP binding to theoperon.

DNA methylation may be a significant mode of genetic regulationin eukaryotes. Methylation in this case refers to...

Select one:

Addition of methyl groups to RNA polymerase

Addition of methyl groups to tRNA

Addition of methyl groups to DNA polymerase

Addition of methyl groups to cytosine