There are four nitrogenous bases involved.
A, T, C and G.
A:T and C:G
The lac repressor prevents the lac genes in the DNA of E. coli from being expressed most of the time. The answer to your question is A. I hope this is the answer that you are looking for and it comes to your help.
Oh yeah, I know that question, this is an EASY science question. It would be A because fermentation<span> is a process that converts sugar to gases, or alcohol. Also, fermentation this process occurs in yeast or the common bread.
Hope that helps and I hope to see you again real soon ;)</span>
They relate because they show that during both natural selection and human evolution u could get a disease during both
