Question

in the case of e. coli breaking down lactose, which mechanism helps control the activity of the related genes? the homoeotic genes the lac operon the tata box

Explanation:

The lac operon is a genetic regulatory system in E. coli that controls the expression of genes involved in lactose metabolism. When lactose is present, it binds to the repressor protein, causing it to detach from the operator region. This allows RNA polymerase to transcribe the genes necessary for lactose breakdown. Homoeotic genes are involved in body - plan development in multicellular organisms and are not related to lactose metabolism in E. coli. The TATA box is a DNA sequence involved in the initiation of transcription in eukaryotes (not the main mechanism for lactose - related gene control in E. coli).

Answer:

the lac operon