
recessive
词源
源自拉丁语 'recess-'(后退)+ '-ivus'(形容词后缀),17世纪通过法语进入英语,最初指'倾向于后退',19世纪获得遗传学含义。
adjective
❶ 指基因或遗传特征在遗传过程中不显现,需要两个相同基因才会表现出来的特性。
“Blue eyes are a recessive trait in humans.”
(蓝眼睛是人类的一种隐性遗传特征。)
“The disease is caused by a recessive gene.”
(这种疾病是由隐性基因引起的。)
❶ 指性格或行为上退缩、不主动的,倾向于隐藏自己或避免引人注目。
“He has a recessive personality and avoids social gatherings.”
(他性格内向,回避社交聚会。)
“Her recessive nature made her reluctant to speak in public.”
(她内敛的性格使她不愿在公开场合发言。)
noun
❶ 在遗传学中指不显现的基因或遗传特征,需要纯合状态才会表现出来。
“The recessive is masked by the dominant allele.”
(隐性基因被显性等位基因掩盖。)
“Mendel discovered the ratio of dominants to recessives in pea plants.”
(孟德尔发现了豌豆植物中显性与隐性的比例。)
常见短语
recessive gene — 指需要两个拷贝才会表现出性状的基因,在遗传学中与显性基因相对。
“Cystic fibrosis is caused by inheriting two recessive genes.”
(囊性纤维化是由遗传两个隐性基因引起的。)
recessive inheritance — 描述隐性基因从父母传给子女的遗传模式,通常需要父母双方都携带该基因。
“The pattern of recessive inheritance explains why some disorders appear unexpectedly.”
(隐性遗传模式解释了为什么一些疾病会意外出现。)