Epigenetics is a type of gene regulation that can be passed from a cell to its daughters. The most common mechanism is methylation.

外因遗传是一种可以传给下一代细胞的基因调控过程，最常见的方式是通过甲基化作用来完成，该作用可以让甲基（由一个碳原子和三个氢原子组成）附着于腺嘌呤或胞嘧啶上。

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Genetic damage to cone cells, which causes colour blindness, is the most common type of gene disorder seen in humans.

锥体细胞的遗传缺陷导致了色盲，这是人类最常见的一种基因疾病。

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Only five children born in the U.S. annually have the same type of LCA as Morehouse, but focusing on a rare single-gene defect is a good way to develop a model for treating more common ailments.

在美国出生的孩子中，每年只有5个孩子的雷伯氏先天性黑内障与豪斯为同一类型，但是从一个少见的单基因缺陷入手，是开发更普遍的治疗模型的一个很好的途径。

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