A familial extra small marker autosome in persons with normal phenotype.
The propositus was referred because of sterility and oligospermia. His karyotype was 45, XY, t(13q14q). His father was dead; his mother and the only brother, who was fertile, both had 47 chromosomes, but a normal phenotype and normal intelligence. The additional chromosome was three quarters the size of a G chromosome and had satellites on the short and long arms.
D000328:Adult; D002869:Chromosome Aberrations / Q000235:genetics*; D002871:Chromosome Banding; D025063:Chromosome Disorders; D002901:Chromosomes, Human, 13-15; D002904:Chromosomes, Human, 21-22 and Y; D006801:Humans; D008297:Male; D009845:Oligospermia / Q000235:genetics; D014178:Translocation, Genetic