Ecoli was added in test tube with red phenol and lactose. The red indicator turned yellow. Explain the Lac operon Indicate which will be ON and which will be OFF

Gene - -- RNA Polymerase mRNA Repressor Lactase.

Which element is found in both dna and proteins

Plz ! cattle ranchers and dairy farmers rarely allow all of their animals to reproduce instead they practice selective breeding and only encourage the reproduction of animals with specific features. which of the following cows would a dairy farm most likely choose to reproduce? a. a cow that makes a lot of milk. b. a cow that can run quickly. c. a cow with a think, soft fur. d. a cow with large, strong hooves.

Are the earth's ocean floor and continents the same age geologically? why or why not?