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gene regulation and structure
ch 10 section 2
6
Biology
9th Grade
04/03/2008
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Term
operator
 Definition
the piece of DNA that overlaps the promoter site and serves as the on-off switch
Term
operon
 Definition
the operator that controls them all function together
Term
lac operon
 Definition
the operon that controls the metabolism of lactose
Term
repressor
 Definition
a protein that binds a operator and physical blocks RNA polymerase from binding to a promotor site
Term
intron
 Definition
long segments of nucleotides that have no coding information
Term
exon
 Definition
a portion of a gene that are translated into proteins
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