Question

HELPPPPP ASAP

For the DNA strand C T G G A C, choose the correct complementary strand sequence.

options:

G A C C T G


A T G A T C


G T C C A G


C T G G A C

Answer 1

GACCTG (the fourth option)

Step-by-step explanation:

To find the correct complementary strand, we need to know this simple rule:

T always pairs with A and C always pairs with G.

So whatever letter you have in the DNA strand, the complementary strand will have the complement to it. In this case, we have CTGGAC. The complement of C is G, for T it is A, and so on. Therefore, the correct complementary strand is GACCTG (the fourth option).