F 1 females could be backcrossed to the male homozygous recessive parent.也可用雌性F1与隐性纯合雄性亲本回交.Homozygous races do not segregate on selfing.自体受精不能分离纯合的生理小种.Objective : To study the pathogenesis of a homozygous patient with ...
F 1 females could be backcrossed to the male homozygous recessive parent.也可用雌性F1与隐性纯合雄性亲本回交.Altogether, half the offspring will be homozygous at that particular locus.加在一起, 将有半数的后代在那个特定的位点上是纯合的.Homozygous races do not se...
Alex clenched her fists and gritted her teeth.亚历克丝攥紧拳头，牙咬得咯咯响。He gritted his teeth and plunged into the cold weather.他咬咬牙,冲向寒冷的天气.The rest of the group shouldered their bags, gritted their teeth and set off.那群人中其余的人扛起包，咬...
利用显微镜检查组织，以排除或确认癌变。The tissue is examined microscopically to rule out or confirm cancer.他们在常规体检中发现了扩散性的癌变。They found invasive cancer during a routine examination.这些观察为鉴定具有癌变潜能的组织指明了一条可能的途径.These observations suggest a po...
彼得深邃的目光长久地注视着他。Peter gave him a long deep look.房顶未必能如侯爵设想的那么长久地遮挡住天空.That might not be so long as the Marquis supposed.宽大的住宅并不能长久地留在游人的记忆中.For it is not the large houses that live in the memory of the visitor....
The Roosevelt family produced two presidents: Theodore Roosevelt and Franklin Roosevelt.罗斯福家族出过两个总统: 西奥多·罗斯福和弗兰克林·罗斯福.The Referendum Examination Commission encroaches the presidents executive personnel.公民投票审议委员会的设计则有侵犯总统...