Phylogenetic studies using gene A in several species by taking three different but similar gene sequences show that gene A has received gene duplication in several species.
Phylogeny is a description of the classification that shows the kinship relationship of a species with its ancestors and the evolutionary relationship between organisms. The purpose of a phylogenetic study is to determine the classification and conclude the phylogeny from the relevant data by comparing the variable characteristics of organisms.
The phylogenetic relationship of a species can be determined based on mitochondrial DNA sequences. Mitochondrial DNA can generate data quickly and consistently. In several species, phylogenetic studies were carried out by researchers showing three different but similar gene sequences, namely using the same primer. This shows that there has been duplication of genes in some of these species that they have a kinship of the same ancestral species.
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