Submitted by Prerak Juthani 

The human genome is 3 x10^9 base pairs long. How long should you design a primer such that it anneals only ONCE to a particular sequence in the entire genome? (Calculator use is permitted) 

a) 13 nucleotides
b) 16 nucleotides 
c) 30 nucleotide 
d) 40 nucleotides
e) 43 nucleotide 

The correct answer is…

The correct answer is B. 

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