If a mutation in UASg prevents Gal4 from binding, a possible consequence is:

a. The mediator will not bind to the polymerase.
b. Transcription will be silenced
c. Gal4 will be transcribed at trace levels
d. RNA polymerase will not be stabilized at the promoters of gal 1, 7, and 10
e. All of the above

Option B.

Transcription will be silenced.

Explanation:

Gal4 is a transcription factor that regulate gene expression in a positive way. It is a year protein that regulates gene induced by galactose. It lies upstream of the activating sequence and activate them. It binds to 17 basepair sites of the upstream activating sequence(UAS). If USAg prevents Gal4 from binding, transcription will be silenced.

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yes

no

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