Answer:they won't for a pair
Explanation:Basically it all depends on process called complementary base pairing, the structure of thymine and adenine is such that it forms two hydrogen bonds and therefore pair up
2.guanine and cytosine have such structure that they form three hydrogen bonds and pair up
So Adenine complements only thymine and guanine complements cytosine and there aren't any chances of guanine pairing up with thymine.
The correct answers are 1, 2 and 4
I believe it is number 3.
Hope this helps!
The answer is A.
It modifies and stores proteins received from the endoplasmic reticulum.
Hope that helped! :)
