母系氏族是由雌性后代和年轻雌性组成的。
The matriarchal society consists of her female offspring and their young.
雄性老鼠如果饮食不健康，其雌性后代更容易患类似糖尿病的疾病。
Female offspring of male rats on bad diets are more likely to develop diabetes-like disease.
肥胖雄鼠的雌性后代身上600个以上的胰岛出现了基因表达的改变。
The daughters of the obese male rats showed an altered expression of more than 600 pancreatic islet genes.
当一个雌性没有足够的资源，她最好要一个雌性后代，因为小雌性相比小雄性能生殖。
If a female has reduced access to resources, she is better off having a female, since a small female will be more likely to reproduce than a small male.
真正令人吃惊的是，当莫里斯和她的团队继续对肥胖老鼠的雌性后代进行检查时，发现它们也出现了胰岛素和血糖调节障碍的问题。
The real surprise came when Morris's team went on to examine the obese rats' female offspring. These too had problems regulating insulin and glucose levels.
真正令人吃惊的是，当莫里斯和她的团队继续对肥胖老鼠的雌性后代进行检查时，发现它们也出现了胰岛素和血糖调节障碍的问题。
The real surprise came when Morris's team went on to examine the obese rats' female offspring.These too had problems regulating insulin and glucose levels.
通常来说，如果温度升高，雌性后代的出生率就会高一些。但鳄蜥的情况正相反，在更温暖的环境下，雄性后代的出生率更高。
However, while a boost in temperature generally results in a nest full of more females than males, the opposite is true for tuatara whose offspring skew toward male in warmer climes.
从人类和其他动物身上掌握的大量证据也证实，享有强大社会关系的雌性相比之下更健康，成功繁育后代的几率也更高。
The data add to a growing body of evidence from humans and other animals that females with a strong, supportive social network are healthier and have greater reproductive success.
由国际科学家组成的一支研究小组发现，所有北极熊都是一种雌性棕熊的后代。
Research by an international team of scientists has found that all polar bears descend from a single female brown bear.
几年之后菲菲成为了女头领，九个后代中存活了七个，是所有雌性大猩猩中留下后代最多的一个。
Years later Fifi climbed to top matriarch, with seven of nine offspring surviving-the most of any female.
但是现代遗传学技术表明，许多物种的雌性很明显是处于一种单配关系中，但所生育的后代却有着不止一个父亲。
But modern genetic techniques have shown that in many species females in apparently monogamous relationships often produce families that have more than one father.
种驴和雌性斑马的后代——叫做斑骡——也存在，但数量极其稀少。
Offspring of a donkey sire and zebra mare, called a zebra hinny, do exist but are rare.
毕竟，如果不是为了繁重后代，两个雄性干嘛非要为了一个雌性争个你死我活呢。
After all, why bother fighting another male for a female unless she is fertile?
使用干细胞技术，由richardr. Berhringer博士带领的德克萨斯州M.D.A nderson肿瘤中心的生殖科学家们利用两只公鼠成功繁殖出雌性和雄性老鼠后代。
Using stem cell technology, reproductive scientists in Texas, led by Dr. Richard r. Berhringer at the M.D. Anderson Cancer Center, have produced male and female mice from two fathers.
这种来自墨西哥和美国西南部的、全为雌性的蜥蜴物种（脊索动物门臼齿蜥科Aspidoscelis属）能够在无需雄性授精帮助的情况下繁殖良种后代。
This all-lady lizard species (of theAspidoscelis genus) from Mexico and the U.S. Southwest manage to produce well-bred offspring without the aid of male fertilization.
下一阶段也是进行同样的实验，但比对的雌性蜣螂变成体型相等，角的大小却有所不同，藉此观察角较大的雌性蜣螂是否会产下更多后代。
The next stage, though, was to do the same experiment, but match females who were the same size except for their horns, in order to see if a bigger horn results in more offspring.
然后雄性老鼠与雌性老鼠隔开，避免任何对于后代产生的其他影响。
The males were then taken away from their females, to limit any influence they might have on their progeny.
在许多拥有较长幼年期的物种中，雌性选择让雄性孵化后代来增加雄性对子代的感情投入。
In many species with long childhoods, female choice bred males to evolve increasing emotional investment in their offspring.
是后来的这些雌性鸟儿而不是雄性鸟儿最初的伴侣和雄性鸟儿一起生殖后代的。
Those are females other than the male's primary nest-mate with whom they sire offspring.
海鸥与信天翁同样有“一夫一妻”传统，不过雌性在没有雄性的前提下可以更好的哺育后代。
In monogamous gulls and albatrosses, it gave females the chance to breed without a male partner.
按照定义，一个孤雌生殖的种群全部是雌性，无论赋予或去除稀有突变，结果都是：一只轮虫的后代的基因组与她完全一样。
A parthenogenetic population is, by definition, all female and the result, give or take the odd mutation, is that a rotifer's daughters are genetically identical to her.
狮虎兽是雄性狮子和雌性老虎的后代。
A liger is a hybrid cross between a male lion and a tigress.
对这一点雌性猩猩是心知肚明的，同时养育后代的责任也全部落在了雌性的肩膀上。
When a female orangutan sees a male, she knows he's after one thing. The child-rearing is all up to the female.
她说：“雌性是一台吞食机器，而且她吃任何东西就是为了繁殖后代。”
"Females are eating machines, and everything they eat contributes to reproduction, " she said.
繁殖需要为后代提供营养和生存手段，这是雌性的作用。
Reproduction requires providing offspring with, with, ah, nourishments and, and resources and, and so, ah, this is the female function.
繁殖需要为后代提供营养和生存手段，这是雌性的作用。
Reproduction requires providing offspring with, with, ah, nourishments and, and resources and, and so, ah, this is the female function.
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