The search for the ultimate cause of maleness.
D000818:Animals; D001483:Base Sequence; D004247:DNA / Q000032:analysis / Q000235:genetics*; D005260:Female; D006801:Humans; D008297:Male; D012733:Sex Differentiation; D014960:X Chromosome / Q000032:analysis; D014998:Y Chromosome / Q000032:analysis*
D004247:DNA