RNA Polymerase
An Enzyme That Synthesizes Rna From A Dna Template During Transcription.

Promoter
A Region Of Dna Where Transcription Begins, Binding Rna Polymerase.

Operon
A Cluster Of Genes In Prokaryotes Regulated Together And Transcribed As A Single Unit.

Gene Regulation
The Control Of Gene Expression Through Mechanisms That Increase Or Decrease Transcription Or Translation.

Gene Expression
The Process By Which Information In A Gene Is Used To Produce A Functional Product Such As A Protein.

Anticodon
A Three Nucleotide Sequence On Trna That Pairs With A Codon On Mrna.

Codon
A Three Nucleotide Sequence On Mrna That Specifies A Particular Amino Acid During Translation.

rRNA
Ribosomal Rna That Forms Part Of The Structure Of The Ribosome.

tRNA
Transfer Rna That Brings Amino Acids To The Ribosome During Translation.

mRNA
Messenger Rna That Carries Genetic Information From Dna To The Ribosome For Translation.