Answer: Creo que es B
Explanation:
P.S(eso fue muy difícil. Lo siento mucho si se equivoca.)
AraC protein certain to the ara
operator works as a repressor that avoid transcription of the same ara operon
and the araC gene AraC protein is an activator in the presence of arabinose and
repressor in the absence of arabinose -With arabinose absent, the AraC protein
stays as
a homodimer. One AraC protein put together to the ara initiator and the other
protein now binds to a different regulatory site in DNA called the ara operator.
I just came here to say, is that jk in your pfp
the answer to that question is embryo