Question

Can you help me with this question please.

DNA is made of two chains of nucleotides. Which type of bonds hold the chains together?
A= hydrogen bonds
B= covalent bonds
C= ionic bonds
D= polar covalent bonds

Answer 1

Hydrogen bonds would be the right answer

Answer 2

Option A, Hydrogen bonds

Step-by-step explanation:

Hydrogen bond between the bases holds the two strands of double helix together. There are four base namely Adenine (A), Cytosine(C), Guanine (G) and Thymine (T) which forms complementary base pairs.

There are two base pairs – A = T and C = G which are bonded by hydrogen bonds which can be easily broken for DNA replication.

Hence, option A is correct.