Argentina article genetics classification 62 animal 57 Animals 53 phylogeny 48 Phylogeny 46 physiology 44 female 33 Female 31 genetic variability 31 male 29 nucleotide sequence 29 isolation and purification 28 Male 27 microbiology 26 Molecular Sequence Data 25 South America 25 molecular genetics 25 DNA sequence 24 genotype 24 human 24 polymerase chain reaction 23 DNA, Mitochondrial 22 Sequence Analysis, DNA 22 chemistry 22 mitochondrial DNA 22 Genetic Variation 20 Humans 20