Genetics is the study of heredity and how qualities and characteristics are passed on from one generation to another by means of genes. 遗传学
noun [专属名词] 遗传学；（有机体、特征等的）遗传性，遗传特征
Genetics is also bringing about dramatic changes in our understanding of cancer. 遗传学也正使我们对癌症的理解发生巨大的变化。
