词根词缀：geno-, gen-, genit-, gener-, -gen

【来源及含义】Greek > Latin: race, kind; line of descent; origin, creation; pertaining to sexual relations, reproduction, or heredity; and more recently, a gene or genes

【同源单词】abiogenesis, abiogenetic, abiogenetically, abiogenous, acrogen, acrometagenesis

词根词缀：metho-, meth-

【来源及含义】a combining form meaning methyl

【同源单词】methane, methanogen, methanogenesis, methanogenic, methanol, methanolic