Question

What is the number of thymine bases in a 340 nm strand of b-dna in which 50% of the total bases are purines, out which 50% are adenine?50010002000700​

Answer 1

Answer:

250

Explanation:

pitch of dna is 3.4 nm

that makes 340/3.4=100 turns

a single turn consists of 10 bp

so total no. of bases are 1000

50% are purines therefore 50 % are pyrimidines

and a thymine is paired opposite adenine

so out of 100% , 25% of bases are thymine ie. 250