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Endothermic animals with four-chambered hearts include the
Lac Operon
A regulatory mechanism in bacteria that controls the expression of enzymes involved in lactose metabolism.
Repressor
A protein that binds to specific DNA sequences, preventing the transcription of genetic information from DNA to mRNA.
Acetyl Groups
Organic functional groups consisting of a methyl group single-bonded to a carbonyl. The formula is CH3CO-, significant in metabolic processes.
Histones
Proteins that package and order the DNA into structural units called nucleosomes, playing a critical role in gene regulation.
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