An actin gene in humans is 92 identical to the homologous actin gene in mice. An actin gene in human is 80% identical to the homologous gene.
Orthologous sequences provide useful data in taxonomic classification and phylogenetic analyses of organisms.
The sequence of genetic difference can be used to draft the relatedness of organisms. Two organisms that are very near related are likely to show very similar DNA sequences between two orthologs.
Thus, An actin gene in human is 80% identical to the homologous gene.
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