Because my cousin and I have one-eighth of our genes in common--our r is 0.125.

因为我的堂兄和我有八分之一的基因是相同的——我们的 r 是 0. 125。

Interestingly, people with type 1 diabetes often have specific HLA genes in common with each other, one called HLA-DR3 and another called HLA-DR4.

有趣的是，1型糖尿病患者经常会有同样的HLA基因，一种叫作HLA-DR3，另一种叫作HLA-DR4。

We also have a surprising number of genes in common: including certain genes associated with Alzheimer’s and Huntington’s disease.

我们还有数量惊人的共同基因：包括与阿尔茨海默病和亨廷顿舞蹈病相关的某些基因。

They result when a woman releases two eggs at the same time and they're fertilized by two separate sperm, so they have 50 percent of their genes in common on average, like ordinary siblings.

当一名女性同时释放两个卵子，并与两个单独的精子受精时，就会产生这种结果，所以她们平均有50%的基因相同，就像普通的兄弟姐妹一样。