Question

What is the number of hydrogen bonds in a b dna of 1000 base pairs with the adenine 75% of the times in one strand and

Answer 1

About 2150 H bonds present.

75 per A….750 ×2 = 1500

10 per A …. 100 ×2 =200

If remain G Or C ( bc watson cric base pairing in b-dna ) then

15 per … 150 ×3 = 450

So in 1000 bp hydrogen no is total = 2150