title: Hae III restriction of DNA from three cases with nonfluorescent Y chromosomes (45XO/46XYnf).
abstract: Hae III restriction patterns are reported in three cases with normal-sized but nonfluorescent Y chromosomes (XO/XYnf mosaics). The 3.4- and 2.1-kb fragment classes of reiterated Y chromosomal DNA were not present in the three cases. Mechanisms leading to these findings are discussed.
mesh_terms: D000293:Adolescent; D000328:Adult; D001483:Base Sequence; D002675:Child, Preschool; D002871:Chromosome Banding; D004262:DNA Restriction Enzymes; D015252:Deoxyribonucleases, Type II Site-Specific; D005260:Female; D005456:Fluorescent Dyes; D006801:Humans; D008297:Male; D009030:Mosaicism; D012729:Sex Chromosome Aberrations / Q000235:genetics*; D014998:Y Chromosome / Q000648:ultrastructure
chemical_list: D005456:Fluorescent Dyes; D004262:DNA Restriction Enzymes; D015252:Deoxyribonucleases, Type II Site-Specific; C024403:GGCC-specific type II deoxyribonucleases