What type of bonds does base-pairing in DNA involve?

Answer 1

The bases are being "paired" with 2 or 3 hydrogen bonds.

In DNA, 4 different base pairs are lined up in two strands to create a certain sequence that, in the end, codes for many different proteins. The 4 different bases are:

  • Adenine (A)
  • Thymine (T)
  • Guanine (G)
  • Cytosine (C)

    Adenine will normally pair up with thymine, and guanine will pair up with cytosine.
    A-T
    G-C

    Between both pairs, hydrogen bonds play the main role of holding them together. The difference between the two pairs is that between A and T, there are 2 hydrogen bonds, while between C and G, there are 3 hydrogen bonds.

    This explains why, for example, C-T pairing is unfavourable.

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Answer 2

Hydrogen bonds are involved in base-pairing in DNA.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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