Suppose that the mutation rate per base pair for a genetic locus is 4 Ã 10â8, and that the locus contains 1,500 base pairs. What is the per-locus mutation rate?
A) 4 Ã 10â5
B) 6 Ã 10â5
C) 8 Ã 10â5
D) 4 Ã 10â4