Hereditary blindness is a recessive trait, meaning only one copy of the defective gene is needed for symptoms to appear.
遗传性失明是一种隐性性状，意味着只要有一个异常基因副本就可能出现症状。
The recessive gene for lactose intolerance is present in many people, but they don't experience symptoms unless they inherit two copies.
乳糖不耐受的隐性基因在许多人中存在，但除非他们从父母那里都继承了这个基因，否则不会出现症状。
In humans, red-green color blindness is a recessive condition, so individuals need both mutated genes to be affected.
在人类中，红绿色盲是一种隐性状况，受影响的人需要同时拥有两个突变基因。
The recessive trait for albinism, which affects pigmentation, is very rare and occurs when both parents pass it on to their child.
影响色素的白化病是一种罕见的隐性性状，当父母双方都将其传给子女时才会出现。
Asthma is not a completely recessive trait, but having both parents with the genetic variant increases the likelihood of developing it.
哮喘并非完全的隐性特征，但父母双方都有该遗传变异会增加患病的可能性。
Recessive traits like sickle cell anemia can be more severe when expressed in homozygous individuals, who have two copies of the same abnormal gene.
像镰状细胞贫血这样的隐性特征，在同型纯合子（携带两个相同异常基因）身上可能会更为严重。
The recessive form of Huntington's disease is passed down through generations, affecting those who inherit two faulty copies of the huntingtin gene.
亨廷顿氏病的隐性形式通过世代传递，影响那些从父母处遗传到两个亨廷顿蛋白基因突变的个体。
While baldness can be influenced by genetics, it's generally an autosomal dominant trait, not recessive, so one copy is usually enough.
虽然脱发可能受基因影响，但它通常是常染色体显性性状而非隐性，所以通常一例就足以显现。
The recessive trait for height in humans is less dominant than other traits, so even tall parents can produce offspring with average height.
人类身高的隐性特征不如其他特征明显，因此即使高个子父母也可能生出普通身高孩子。
The recessive gene for long QT syndrome, if inherited from both parents, can increase the risk of sudden cardiac arrest.
长QT综合症的隐性基因，如果来自父母双方，会增加突发性心脏骤停的风险。