DNA is made of two chains of nucleotides. Which type of bonds hold the chains together?
hydrogen bonds
covalent bonds
ionic bonds
polar covalent bonds
Answers
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4
Answer:
hydrogen bonds
A DNA molecule consists of two long polynucleotide chains composed of four types of nucleotide subunits. Each of these chains is known as a DNA chain, or a DNA strand. Hydrogen bonds between the base portions of the nucleotides hold the two chains together
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0
a
Explanation:
there are two hydrogen bonds between adenine and thymine , and there are three hydrogen bonds between guanine and cytocine
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