n. [遺][細胞][染料] 染色體（形容詞chromosomal，副詞chromosomally）
考試真題
Yet most ancestry testing only considers a single lineage, either the Y chromosome inherited through men in a father’s line or mitochondrial DNA, which a passed down only from mothers.
出自-2009年考研閱讀原文
Yet most ancestry testing only considers a single lineage, either the Y chromosome inherited through men in a father's line or mitochondrial DNA, which is a passed down only from mothers.