Describe how the lac operon functions, and explain how it permits e. coli to produce the enzymes needed to break down lactose when it is present in the bacterium.

Dna. we have heard that we are a product of our dna. but where is it? how do we "get" our dna? it is passed to us, from our parents, but in what form? several vocabulary words associated with inheritance are used interchangeably and sometimes, incorrectly. let's see if you can clear this up for someone just learning about inheritance and cell structure.