The etymology of the word phylogeny comes from the Greek "phylon" which means tribe or race and "gene" which means to produce or generate, it is a branch of biology that is responsible for studying the origin and development of species in a way global. The term was used for the first time by the biologist Ernst Haeckel in 1866, this part of biology ratified the theories proposed by biologists Charles Darwin and Alfred Russel Wallace that said that living beings do not remain unchanged but evolve over time. time.
This science shares the idea that all living beings have a common ancestor and as mentioned, it studies the relationships that exist between different organisms and tries to establish the descendants or kinship that may exist between one and the other. Currently, as a result of evolution in the field of genetics, the similarities and differences between one species and another can be studied more efficiently.
Through the years, the idea that living beings evolve due to mutations in DNA has been shared, this in order to better adapt to the environment, in some cases these mutations give way to new species, but in others these DNA modifications only change some trait that will help the species adapt to its ecosystem.
The application of phylogeny at present has allowed great advances in the scientific and medicinal field, an example of this is the study of the mitochondrial sequence, also when detecting the origin of a contagious disease when comparing the strains of bacteria and viruses.
