The XY sex-determination system is a sex-determination system present in many mammals, including humans, some insects , some snakes, some fish , and some plants (Ginkgo tree). In this system, the sex of an individual usually is determined by a pair of sex chromosomes.

雄性生物擁有兩個不同的 性染色體 （XY），被稱為「異染色體性別」 [1]。 在人類中， Y染色體 的存在負責觸發男性發育； 在沒有Y染色體的情況下，胎兒會發育成女性。 有各種例外，例如患有 克氏综合征 (Klinefelter syndrome)（具有 XXY 染色體）、 XY性腺發育不全 (斯威爾综合徵, Swyer syndrome)（具有 XY 染色體的女性）、和 XX雄性综合徵 （英语：XX_male_syndrome） （具有 XX 染色體的男性）的個體，但這些例外很少見。 在某些情況下，一個看似正常的女性擁有陰道 …

AXYS, the Association for X and Y Chromosome Variations, is an advocacy, education and support organization for individuals with X and Y chromosome variations and their families. This includes those with Klinefelter syndrome (47,XXY), Trisomy X (47,XXX), 47,XYY, 48,XXYY, 48,XXXY and related genetic conditions.

多尼米尼加共和国的“女孩”长大后变男孩 胎儿带xy性染色体，但因缺乏5α-还原酶而无法合成一种叫5α-二氢睾酮（dht）的激素。 因而，这些病人出生时 女性占外观，通常在青春期开始雄性化 。

2024年10月3日 · Using a new suite of generalizable analytic approaches, we examine gold-standard diagnostic ratings, scores on 66 dimensional measures of psychopathology, and measures of cognition and functioning in two different sex chromosome aneuploidies (SCAs)—Klinefelter (XXY/KS) and XYY syndrome (n = 102 …

The XX/ XY sex-determination system is the most common designation in mammals whereby SRY on the Y-chromosome mainly acts to determine sex and activates a cascade of genetic pathways to develop testis in mice and humans. In this system, females have two X chromosomes in somatic cells, while males have one X and one Y chromosome.

46,XX/46,XY is either a chimeric or mosaic genetic condition characterized by the presence of some cells that express a 46,XX karyotype and some cells that express a 46,XY karyotype in a single human being.

Sex chromosomes are chromosomes, or packages of DNA, that are found inside the nucleus of all of your cells. There are two different kinds: X and Y, which determine whether you’re biologically...

2024年8月8日 · Wanita adalah XX. Pria adalah XY. Namun, secara genetik, beberapa wanita sebenarnya adalah pria. Mereka tumbuh sebagai wanita dengan tubuh wanita, dan sebagian besar baru menyadari saat pubertas bahwa mereka berbeda. Para peneliti Denmark telah memetakan, untuk pertama kalinya, seberapa banyak wanita yang secara genetik adalah pria.

2016年12月31日 · Heterogametické pohlavie (XY) je u človeka (a drozofily) mužské (samčie), homogametické pohlavie (XX) je ženské (samičie). Na chromozómoch je DNA usporiadaná lineárne a jej jednotlivé úseky sú uložené v charakteristických väzbových skupinách, tvoriac tak komplexnú genetickú informáciu organizmu.