遺傳學 yíchuánxué genetics Origin Definitions Defs Strokes Stroke Words Sentences Sents 遗传 遺傳 yíchuán noun heredity the passing on of physical or mental characteristics genetically from one generation to another学 學 xué nounaffix branch of learning (bound form) a subject or branch of study; often used as a suffix for -logy, -ics, or -science