Tracking the sexes by their genes.
Pennisi
E
E
D003469:Culture; D004272:DNA, Mitochondrial / Q000235:genetics*; D004641:Emigration and Immigration; D005006:Ethnicity / Q000235:genetics; D005260:Female; D005819:Genetic Markers; D005828:Genetics, Population; D006801:Humans; D008297:Male; D009154:Mutation; D044469:Racial Groups / Q000235:genetics; D012727:Sex Characteristics; D014998:Y Chromosome / Q000235:genetics*
D004272:DNA, Mitochondrial; D005819:Genetic Markers