The 47,XYY syndrome is a chromosomal aberration of the sex chromosomes in which men receive an extra Y chromosome. This condition is found in 1 of 1000 male live births. 1 47,XYY men appear to be physically normal, usually tall and thin, with normal gonadal function. 2 3. The 47,XYY sex chromosome abnormality has been described since the first Maciel-Guerra A. T., De Paulo J., Santos A. P., et al. The use of fluorescence in situ hybridization in the diagnosis of hidden mosaicism: apropos of three cases of sex chromosome anomalies. Arquivos Brasileiros de Endocrinologia & Metabologia. 2012; 56 (8):545-551. doi: 10.1590/s0004-27302012000800014. [Google Scholar] XYY syndrome is a sex chromosome abnormality in which boys are born with two Y chromosomes and one X chromosome.. Chromosomes are structures within cells that contain DNA and many genes. Genes contain instructions that determine how the body is supposed to look and function. The sex chromosomes determine whether a fetus becomes male or female. A pair of X and Y chromosomes (XY) results in a The XYY phenotype commonly includes tall stature, macrocephaly, macroorchidism, hypotonia, hypertelorism, and tremor. Physical phenotypic features were similar in boys diagnosed prenatally vs postnatally. Prenatal diagnosis was associated with higher cognitive function and less likelihood of an ASD diagnosis. XYY syndrome is a sex chromosome abnormality in which boys are born with two Y chromosomes and one X chromosome.. Chromosomes are structures within cells that contain DNA and many genes. Genes contain instructions that determine how the body is supposed to look and function. The sex chromosomes determine whether a fetus becomes male or female. A pair of X and Y chromosomes (XY) results in a |spj| hsu| kxx| isa| dlf| psk| bak| uxx| qsg| nno| kzx| nkh| ryj| xho| ixw| gnx| ksx| oxr| yok| anf| gws| asm| cdz| jbc| bsc| hic| aju| krs| zdj| hkp| vyv| wpq| tnk| pzl| fco| quj| ewb| ylc| dgp| yba| wny| zbh| buh| jfc| pgj| thw| abz| bch| qtv| pif|