CHEMISTRY(KCET)
285663
Which of the following is correct about H-bonding in DNA?
1 \(\mathrm{A}-\mathrm{T}, \mathrm{G}-\mathrm{C}\)
2 \(\mathrm{A}-\mathrm{G}, \mathrm{T}-\mathrm{G}\)
3 \(\mathrm{G}-\mathrm{T}, \mathrm{A}-\mathrm{C}\)
4 \(\mathrm{A}-\mathrm{A}, \mathrm{T}-\mathrm{T}\)
Explanation:
'(a) In DNA, adenine (A) forms two hydrogen bonds with thymine ( T ) and guanine ( G ) forms three hydrogen bonds with cytosine (C).