The product of the lacI gene is _____

A) an enzyme
B) a transport protein embedded within the membrane
C) ?-galactosidase
D) the repressor


Answer: D

Biology & Microbiology

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Which of the following occurs when allolactose levels increase in E. coli?

A. Transcription of genes within the lac operon increases. B. Transcription of genes within the lac operon decreases. C. Transcription of genes within the lac operon does not change. D. E. coli cells replicate rapidly. E. The tryptophan operon becomes more active.

Biology & Microbiology

During anaphase, homologous chromosomes separate.

a. true b. false

Biology & Microbiology

Cloning vectors do not replicate in bacteria

1.True 2.False

Biology & Microbiology

Which of the following is/are TRUE?

What will be an ideal response?

Biology & Microbiology