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.
来源:词典精选例句Norwegian whalers said yesterday they had harpooned a female minke whale.
挪威的捕鲸人说昨天他们用捕鲸叉捕获了一头雌性小须鲸。
来源:《柯林斯高阶英汉双解学习词典》The male is distinguished ( from the female ) by its red beak.
由喙部为红色这一特点可以辨认出其为雄性 ( 以区别于雌性 ).
来源:词典精选例句Researchers just mapped the genome of a female platypus from Australia.
最近,研究人员们为一直来自澳大利亚的雌性鸭嘴兽绘制了基因图.
来源:互联网摘选In cows and many other animals, the female is in estrus just before ovulation.
母牛和许多其他的雌性动物都正好是在排卵前发情.
来源:词典精选例句This usually occurs in old females and can be managed with medicine.
这通常发生在雌性进入老年期后,可以通过药物控制.
来源:互联网摘选The male of the species is almost indistinguishable from the female.
这个物种的雄性和雌性几乎无法分辨。
来源:《牛津高阶英汉双解词典》Although females may give birth to two young, usually only one survives.
尽管雌性可以产生2个幼仔, 通常仅仅幸存一个.
来源:网络文摘精选Sightless and flightless, they exist only to be impregnated.
这些雌性昆虫既没有视力,也无法飞行, 它们存在的唯一目的就是受孕生子.
来源:网络文摘精选Isoflavones are members of the flavonoid family which are considered a typical phytoestrogens.
异黄酮属于黄酮类化合物,是一种典型的植物雌性激素.
来源:网络文摘精选Objective To establish hyperuricemia model of female quail, and to study its pathological feature.
目的:建立雌性鹌鹑高尿酸血症模型并探讨其病理特征.
来源:互联网摘选
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