Which prevents the lac genes in the dna of e. coli from being expressed most of the time

The Lac repressor prevents the Lac genes in the DNA of E.coli from being expressed most of the time.

Hope this helps!

-Payshence

c. movement because i took the test and it lets me review my answers

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.