title: Y family study: heritable variation in the length of the human Y chromosome.
mesh_terms: D000328:Adult; D001947:Breeding; D002874:Chromosome Mapping; D003241:Consanguinity; D006801:Humans; D007231:Infant, Newborn; D007621:Karyotyping; D008297:Male; D012730:Sex Chromosomes; D013223:Statistics as Topic