Experts still aren't sure exactly why it happens, but they believe four-leaf clovers are likely a result of either a rare recessive gene, or genetic mutations in the DNA of a clover plant.

专家们仍然不确定为什么会发生这种情况，但他们认为四叶草可能是一种罕见隐性基因或三叶草植物 DNA 基因突变结果。

CF is an autosomal recessive disorder involving the CFTR gene, which stands for " cystic fibrosis transmembrane conductance regulator, " and this gene codes for the CFTR protein.

CF是一种常染色体隐形遗传病，涉及CFTR基因；CFTR代表跨膜传导调节基因，它编码了CFTR蛋白。

He never used the word gene - it wasn't coined until 1913, in an English medical dictionary - though he did invent the terms dominant and recessive.

他从未用过“基因”这个词——这个词1913年才第一次出现于英国一本医学词典——虽然发明了“显性”和“劣性”这。

The O allele is recessive, so either of the others will override it when they're paired, resulting in either type A or type B.

O基因是隐性i，所以当它和其他基因配对时都将被覆盖，成为A型血或B型血。

It turns out that many specific diseases, or disorders, are recessive and require you to get the gene from both your mother and father.

事实证明，许多特定疾病或症状都是是隐性，需要你同时从父母那里获得这些隐性基因。

Sickle cell is an autosomal recessive disease, so a mutation in both copies of the beta-globin gene is needed to get the disease.

镰贫是一种常染色体隐性遗传病，因此需要两个β-珠蛋白基因序列均突变才能获得该病。

The mutations are inherited in an autosomal recessive pattern, which means that you need mutated genes from both parents to get the disease.

这种变异以常染色体隐性遗传方式遗传，即只有同时遗传父母方突变基因才会患病。

It could be the result of a recessive gene, a so-matic mutation, the influence of environment, or any combination of the three.

它可能是由一个隐性基因表达、一个体细胞基因突变、受环境影响或由以上三个因素任意结合而导致结果。

Spirit bears are actually a subspecies of black bear that due to double recessive gene aren't black at all.

白灵熊实际上是黑熊一个亚种，由于隐性基因，白灵熊根本不是黑色。

Spirit bears are actually a subspecies of black bear that due to double recessive gene aren't black at all.

灵熊实际上是黑熊一个亚种。但由于隐性基因，灵熊毛发一点也不黑。

Since this is linked to the X chromosome, both Duchenne and Becker muscular dystrophy are called X-linked recessive.

由于发病与X染色体有关联，DMD和BMD被称为X连锁隐性遗传。

In fact, even when both parents carry a recessive gene, there's still a 75% chance that they won't both pass on the gene, leading to perfectly healthy kids with respect to that particular disorder or disease.

事实上，即使父母方都携带有隐性基因，他们也有75%几率不会同时将该基因遗传给下一代，从而使孩子们在有几率患上某种疾病或失调同时保持完全健康。

As a quick recap: sickle cell disease is an autosomal recessive genetic disease where the beta-globin subunit of hemoglobin is misshapen, which causes red blood cells to sickle when deoxygenated.

好！简要回顾一下：镰状细胞病，是常染色体隐性遗传病，其中血红蛋白β-珠蛋白发生突变，脱氧情况下会导致红细胞镰变。

All right, as a quick recap: alpha thalassemia is an autosomal recessive disorder caused by deletion of alpha globin genes on chromosome 16.

得！快速回顾一下：α地中海贫血是一种常染色体隐性遗传病，由16号染色体上α珠蛋白基因缺陷引起。

Since you need both mutant copies for the disease, this makes alpha-1 antitrypsin deficiency a recessive disease.

由于罹患α-1抗胰蛋白酶缺陷必须有2个突变基因拷贝，α-1抗胰蛋白酶缺乏症是一种隐形遗传病。

CF develops when there's a mutation in the CFTR gene, but because it's autosomal recessive, you need to inherit two mutated CFTR genes, one from mom and one from dad.

CFTR基因突变时会产生CF，但它是常染色体隐形遗传；患者体内两条CFTR突变基因，一条来自母亲，另一条来自父亲。

It takes having two recessive alleles to exhibit the other traits in this case if you got two blue alleles, you'd end up having blue eyes.

蓝色眼睛是需要有两个隐性等位基因才能表现出来特征。在这种情况下，你要有两个蓝色等位基因，才会有蓝色眼睛。

The chance of them having the same recessive gene is low.

他们拥有相同隐性基因几率很低。

Time for a quick recap: cystic fibrosis is an autosomal recessive disorder involving the CFTR gene, which most notably causes issues with the lungs and the pancreas, but can also affect other organs.

得！快速回顾一下：囊性纤维化是一种常染色体隐形遗传病，与CFTR基因有关，在肺和胰腺组织中病变最为显著，但也可以影响其他器官。

Specifically, acral peeling skin syndrome is inherited in an autosomal recessive manner.

具体来说， 肢端皮肤脱皮综合征是以常染色体隐性方式遗传。