163 (4148): 676–7. doi : 10.1038/163676a0 . ^ " In Pursuit of the Y Chromosome ". Nature 226 (5249): 897. June 6, 1970. doi : 10.1038/226897a0 . http://www.nature.com/nature/journal/v226/n5249/index.html#NV . ^ " Dyeing the Y Chromosome ". Lancet 297 (7693): 275–6. February 6,