[Dicentric Yp chromosome as one of the reasons for the absence of fluorescence in human Y chromosome].
In chromosome sets of three patients with Turner's syndrome non-fluorescent Y-chromosomes of normal size were found in part of the cells. C-, Q- and G-techniques have shown that they were dicentric Yp-chromosomes, resulting from a junction of long arms of two Y-chromosomes with simultaneous loss of the entire distal fluorescent segments. It is supposed that in some cases the non-fluorescent Y-chromosomes, previously described in literature, are as a matter of fact undiscernible dicentric Yp-chromosomes.
D000293:Adolescent; D002503:Centromere / Q000648:ultrastructure*; D002648:Child; D002871:Chromosome Banding; D002875:Chromosomes / Q000648:ultrastructure*; D005260:Female; D005453:Fluorescence; D006801:Humans; D007621:Karyotyping; D008297:Male; D012730:Sex Chromosomes / Q000648:ultrastructure*; D014424:Turner Syndrome / Q000235:genetics; D014998:Y Chromosome / Q000648:ultrastructure*
Ditsentricheskaia Yp-khromosoma kak odna ix prichin otsutstviia fluorestsentsii Y-khromosomy cheloveka.