A.   They are different because some genes are "on" and some genes are "off" which allows them to make different proteins as needed by the cell type

B.   They are different because although they have the same DNA, they have different amounts of certain types of DNA

C.   They are different because they are able to adapt and evolve to different needs of the body 

A.   Positive transcription factors

B.   Negative transcription factors

A.   To do translation

B.   To turn on or off genes

C.   To do transcription

A.   Acts as a binding spot for RNA polymerase

B.   Acts as an RNA primer for DNA polymerase to bind to

C.   Turns off the gene by activating RNA polymerase

A.   It is a sequence of DNA that activates RNA polymerase and allows transcription to occur more frequently

B.   It is a sequence of DNA that amplifies strength of the promoter 

C.   It is a sequence of DNA that allows repressor protein molecules to bind to

A.   It blocks RNA polymerase from transcribing DNA to make RNA

B.   It allows RNA polymerase to transcribe DNA to make RNA

A.   The repressor protein

B.   DNA polymerase

C.   RNA polymerase

A.   it binds to the operator so the lactase genes don't get transcribed

B.   It activates the repressor enabling the repressor to create lactase.

C.   it binds to the repressor allowing the transcription of mRNA instructions for making lactase.

A.   repressor

B.   lactose

C.   promoter

D.   operator