About 1:650–1000 children are born with an extra X or Y chromosome (47,XXX; 47,XXY; 47,XYY), which results in a sex chromosome trisomy (SCT). This international cross-sectional study was designed to investigate gaze towards faces and affect recognition
XXXXY syndrome A group of chromosome defects with multiple X chromosomes and one Y chromosome Clinical Somatic defects overlap Klinefelter syndrome–small undescended testes, hypoplastic penis, gynecomastia, mental retardation, wide-set eyes, ulnar and radial abnormalities; >1⁄2of those with the 49...
Noun1.XXX- the cardinal number that is the product of ten and three 30,thirty large integer- an integer equal to or greater than ten 2.XXX- (genetics) abnormal complement of three X chromosomes in a female sex chromosome- (genetics) a chromosome that determines the sex of an individual;...
(31.4%), 50 boys with 47, XXY (47.6%) and 22 boys with 47, XYY (21.0%). Age did not differ between karyotypes (F(2,102) = 2.81,p = 0.065). Recruitment and assessment took place at two sites: the Trisomy of the X and Y chromosomes (TRIXY) Expert Center at Leiden ...
Sex chromosome complexes XXY, XXXY and XXYY have now been demonstrated in chromatin-positive males with seminiferous tubule dysgenesis. The basic requirement in the cytogenetics of the syndrome appears to be the presence of at least two X chromosomes in combination with at least one Y chromosome....
The clinical significance of an extra Y chromosome remains unknown, but the acromegalic features in this and another patient reported merit contemplation and further study. 展开 关键词: CHROMOSOMES KLINEFELTER'S SYNDROME MENTAL DEFICIENCY DOI: 10.1001/jama.1963.03700160055007 被引量: 18 ...
Males who are mosaic for a 47,XXY cell line with a normal 46,XY cell line may have a variable phenotype (from normal to Klinefelter syndrome) and a higher likelihood of fertility. Show more View chapter Chapter Chromosomes and Chromosomal Abnormalities ...
47,XXY/46,XX 47,XXY/46,XY/46,XX or other combinationsMaleKlinefelter variantMilder but variable Klinefelter phenotype. Hypergonadotropic hypogonadism. Normal average stature and have normal secondary sexual male features with small testes; sterile. Testicular histopathology reveals atrophy of the testes...
In addition to 47,XXY Klinefelter's syndrome, several variants have been described. The anomalies most frequently found have the karyotypes 46,XX, 48,XXYY, 48,XXXY, and 49,XXXXY. Because of its unequivocal symptomatology the 49,XXXXY chromosome aberration has a prominent place among them. ...
Sex chromosome tetrasomy and pentasomy. Sex chromosome abnormalities occur in at least 1 in 400 births and include the well-described 47,XXX, 47,XXY, 47,XYY, and 45,X karyotypes. The addition of ... MG Linden,BG Bender,A Robinson - 《Pediatrics》 被引量: 417发表: 1995年 The patholog...