title: The Y chromosome in sperm of an XYY male.
mesh_terms: D002869:Chromosome Aberrations; D005306:Fertilization; D006801:Humans; D007621:Karyotyping; D008297:Male; D008540:Meiosis; D012730:Sex Chromosomes; D013094:Spermatozoa / Q000032:analysis; D013194:Staining and Labeling