Two DNA sequences that have evolved from the same ancestral gene are aligned using an ungapped alignment (ie., we assume only substitution mutations have occurred and there are no deletion or insertion muffitions). Each sequence is 100 nucleotides long and there are 20 mismatches in the alignment. Assume that the average number of mutations at each site is 0.01 mutations per 100 years. Using Poisson distance. correction model, how many years ago did these two sequences diverge? Round your answer to the nearest integer. QUESTION 2 Assume a Poisson distribution for mutations. Assume the average number of mutations at each site is 0.01 mutations per 100 years. What is the probability that no mutations have occurred at a given site, over a thousand years period? Round your final answer to 4 digits after the decimal point..

1. Two DNA sequences that have evolved from the same ancestral gene are aligned using an
ungapped alignment (ie., we assume only substitution mutations have occurred and there are no
deletion or insertion muffitions). Each sequence is 100 nucleotides long and there are 20
mismatches in the alignment. Assume that the average number of mutations at each site is 0.01
mutations per 100 years. Using Poisson distance. correction model, how many years ago did
these two sequences diverge? Round your answer to the nearest integer. QUESTION 2 Assume a
Poisson distribution for mutations. Assume the average number of mutations at each site is 0.01
mutations per 100 years. What is the probability that no mutations have occurred at a given site,
over a thousand years period? Round your final answer to 4 digits after the decimal point.