the DNA strand given and complementary strand is as follows
5'–AAACTGT–3'
3' -TTTGACA- 5'
There are 4 types of bases, Adenine, thymine, cytosine and guanine
bases pair with the complementary base.
A pairs with T through 2 hydrogen bonds
G pairs with C through 3 hydrogen bonds
when we draw the 2 strands vertically with the correct number of hydrogen bonds.
DNA strand | complementary strand A = T
A = T
A = T
C ≡ G
T = A
G ≡ C
T = A
5 A-T bonds and 2 G-C bonds
2 H bonds for A-T and 3 H bonds for G-C
Therefore total number of hydrogen bonds = (5*2) + (2*3) = 16
