DNA is an acid in the chromosomes in the centre of the cells of living things. DNA determines the particular structure and functions of every cell and is responsible for characteristics being passed on from parents to their children. DNA is an abbreviation for 'deoxyribonucleic acid'.
双语例句
例：
A routine DNA sample was taken.
采集了一份常规的脱氧核糖核酸样本。
例：
DNA profiling matches samples of body fluids left on a victim to the attackers.