X連鎖顯性遺傳 X連鎖顯性遺傳Xlinked dominant inheritanceXlinked dominance 是遺傳的一種模式顯性基因在X染色體攜帶 作為一種遺傳模式不如X連鎖隱性遺傳類型常見在醫學上X連鎖顯性遺傳是指導致遺傳疾病基因位於X染色體從父母那裡遺傳時僅等位基因一個拷貝就足以引起這種疾病在這種情況下基因表達X連鎖顯性等位基因的人將表現出這種疾病並被認為受到影響 已隱藏部分未翻譯内容歡迎參與翻譯 Xlinked dominant traits do not necessarily affect males more than females unlike Xlinked recessive traits The exact pattern of inheritance varies depending on whether the father or the mother has the trait of interest All fathers that are affected by an Xlinked dominant disorder will have affected daughters but not affected sons However if the mother is also affected then sons will have a chance of being affected depending on whether a dominant or recessive X chromosome is passed on When the son is affected the mother will always be affected Some Xlinked dominant conditions are embryonic lethal in males making them appear to only occur in females來源請求