这些常见的遗传变异在针对生物学途径方面和藏匿对少数家庭有较大影响的罕见变种的基因方面同样有着作用。
These common genetic variants are [also] useful in pointing to biological pathways or genes that might harbor rarer variants with larger effects in a few families.
从父母中的一位遗传到变种基因的人患肺癌的概率比常人多30%。
Smokers who get the gene variants from one parent have a 30% greater risk of lung cancer.
这种遗传疾病与大脑中神经递质的受体分子的一些个别变种有关。
It is associated with particular variants of receptor molecules for neurotransmitters in the brain.
当人体经过遗传漂变的过程后，基因变种在人类中变得更常见。
New versions of a gene can also become universal in a population through a random process known as genetic drift.
新形成的变种或许会从它的祖先遗传来某些特性的差异。
The newly-formed variety would probably inherit from its progenitor some characteristic.
研究小组发现当某人遗传的两个副本都是一个变种（16%的欧洲白人）时，肥胖概率将比遗传两个不同变种的人高70%。
The team found that those who inherit two copies of one variant — 16 per cent of white Europeans — were 70 per cent more likely to be obese than those who inherited two copies of the other variant.
FTO并不是影响肥胖的唯一基因，而且遗传一个特定的变种不一定会使任何人肥胖。
FTO will not be the only gene that influences obesity, and inheriting a particular variant will not necessarily make anyone fat.
新形成的变种或许会从它的祖先遗传来某些特性的差异。
The newly - formed variety would probably inherit from its progenitor some characteristic.
已知的易感基因占不到25%的家族患乳腺癌的风险，和残留的遗传变异可能是由于变种赋予较温和的风险。
Known susceptibility genes account for less than 25% of the familial risk of breast cancer, and the residual genetic variance is likely to be due to variants conferring more moderate risks.
如果一个人的两份顺次基因复制有细微不同，遗传学家们即可分析来自于该基因的RNA ，来看该RNA是否也有两个变种。
If the two copies of a person's gene differ slightly in sequence, geneticists can analyze the RNA made from the gene to see if it, too, has two variants.
如果一个人的两份顺次基因复制有细微不同，遗传学家们即可分析来自于该基因的RNA ，来看该RNA是否也有两个变种。
If the two copies of a person's gene differ slightly in sequence, geneticists can analyze the RNA made from the gene to see if it, too, has two variants.
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