2nd choice is the correct one
They are like that because they can't always be faulty and may have at least some spark of truth to this theory also as stated earlier a theory in scientific terms is just an observation so it can't really be turned down hence theory.
D. it serves as a link between membrane proteins on adjacent membranes.
Answer:
the phyiscal appearance of your genes is called
<h2>
<em><u>PHENOTYPE</u></em></h2>