genes
A gene is the part of a cell in a living thing which controls its physical characteristics, growth, and development.
The gene for asthma has been identified.
哮喘病的基因已被识别。
a change in a single DNA letter that appears in 70 per cent of defective genes.
在70有缺陷的基因中出现一个单独脱氧核糖核酸碱基上的变化。
Molecular genetics is enabling scientists to identify individual genes involved in the control of sleep.
分子遗传学使科学家能够辨认出控制睡眠所涉及的单个基因。