Genetics of sex determination in man and mouse.
The cytological evidence has revealed a visible mechanical basis for the production of males and females in equal numbers and irrespective of external conditions (Wilson, 1909).
D000818:Animals; D005260:Female; D006801:Humans; D008297:Male; D051379:Mice; D012732:Sex Determination Analysis; D012733:Sex Differentiation; D014960:X Chromosome; D014998:Y Chromosome