Most cells in your body have two copies of every chromosome and, therefore, two copies of every gene: one from your mother and one from your father.

你体内的大多数细胞每条染色体都有两份拷贝，因此，每个基因也都有两份拷贝：一份来自你的母亲，一份来自你的父亲。

youdao

The life is hard for my father: my mother died years ago, and now his children are far from home, our selfish choices taking us from one end of the country to the other.

我父亲的生活很艰难：我母亲多年前就去世了，现在他的孩子们远离家乡，我们自私的选择把我们从国家的一端带到另一端。

youdao

One of them was from his father who was strict with him and his brother.

其中之一来自父亲对他和弟弟的严格要求。

youdao

In a normal embryo, there are two copies of each chromosome one from the mother and one from the father.

ECONOMIST: A ��virgin birth�� in mice

Most genes in a cell are present as two copies, one from the mother and one from the father.

ECONOMIST: Cloning around

Each one attaches itself to only one predetermined mini-satellite region, or locus, and produces a much simpler pattern of just two bands, corresponding to one gene inherited from the subject's mother, and one from the father.

ECONOMIST: CASE HISTORY: DNA's detective story | The