For anyone that has had a statistics class whats the probability of assembling my DNA at random? There are 3,000,000,000 base pairs in the human genome and 4 choices (codons) for each of the 3,000,000,000 base pairs. So the number of ways to assemble my DNA at random with replacement is 4^3,000,000,000. So the probability is 1/(4^3,000,000,000). Now we have a problem. It would take longer than the age of the universe just to see my DNA assembled from random mutations. Therefore the process of how my DNA got here cannot be random. Something else is driving the process.