EVOLUTION TREES:

We didn’t find an important difference between the three trees. All of them had 4 clusters:

Kansas 79 (1), Kansas 79 (2), Aichi 81

Kanagawa 76, Miyagi 77

Hyogo 83, Kyoto 82, Nara 82, Mississipi 80

England 83, New Jersey 76, Yamagata 81, California 78

The sequences of every one of this clusters, don’t have any temporary or geographical relation between them. This can mean that viruses sequences mutes random, with no evolutive direction.

Between two consecutive years, we can found two viruses that are completely different but these can be similar to viruses that affects with some years of distance.

In the same year we can found very different viruses in different geographical regions, this can be explains by the important mutation ratio of the viruses.

Since an original virus, can be generated an important and very diverse progeny, and every one of them generates other. This can explain why a virus isn’t similar to the virus that infects population the past year, because it can be descendent of another virus that hasn’t any relation with the virus that infects the year before.

Neighbor-joining

Maximum-parsimony

Maximum-likelihood