Biology, 01.12.2021 19:00 jaimeg13

Plzz help Which describes a promoter?

a. the first part of an operon that regulates where, when, and to what level a gene is
expressed

b. the part of an operon that, if attached by a repressor protein, suppresses the
expression of a gene

c. a cluster of genes that are expressed or repressed as a group

d. an enzyme that helps DNA unzip prior to transcription

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Plzz help Which describes a promoter?

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