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The two long polynucleotide chains of DNA are held together by
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The two long polynucleotide chains of DNA are held together by

A
Hydrogen bonds

B
Covalent bonds

C
Metallic bonds

D
Ionic bonds

E
Polar covalent bonds

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DNA is a double helical molecule made of two antiparallel strands of nucleotides which is linked by hydrogen bonds between complementary base pairs. DNA carries the genetic instructions used in the growth, development, functioning and reproduction of all known living organisms. Adenine (A) pairs with Thymine (T) via two hydrogen bonds. Guanine (G) pairs with Cytosine (C) via three hydrogen bonds. Hence option A is correct.
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Question Text
The two long polynucleotide chains of DNA are held together by
TopicBiomolecules
SubjectBiology
ClassClass 11
Answer TypeText solution:1
Upvotes102