Female egg donors are to be recruited by researchers for stem cell experiments for the first time.
研究人员首次招募女性捐卵者进行干细胞实验研究。
A female stores sperm and can determine the sex of each egg she lays by fertilizing it or leaving it unfertilized.
雌性储存精子，可以通过受精或不受精来决定每一个卵细胞的性别。
You see, adult female birds during egg production produce a layer of spongy bone tissue inside certain long bones.
你看，成年雌鸟在产蛋的过程中会在某些长骨内产生一层海绵状的骨组织。
A female butterfly lays an egg on a leaf of a plant.
雌蝴蝶在植物的叶片上产卵。
Researchers diving on squid spawning grounds had noticed that not just female squid would hang around the many mop-like clusters of egg capsules.
研究人员潜到乌贼的产卵地，发现并不只有雌性乌贼围绕这些拖把一样的乌贼卵团团转。
It is a single molecule: a pheromone protein incorporated into the outer layer of egg capsules by glands in the female reproductive tract.
答案就是一种单分子，这种费洛蒙通过雌性乌贼的生殖腺渗入卵鞘。
Determining fossil gender is a challenge, but the presence of the egg is strong evidence this individual was a mature female.
通常确定化石的性别是一个挑战，但龙蛋成了确定此化石标本为一成年雌性的强有力的证据。
After the female penguin lays a single egg, she transfers it to the male to incubate while she heads out to sea to feed.
当企鹅妈妈下蛋之后，她就会把蛋转交给父亲孵化，这段时间内她就去海里觅食。
But imagine if a genetic mutation arose in one member of a female-female pair that enabled her to distinguish her egg from that laid by her partner, says Bailey.
但是请想象一下，如果一定数量的雌雌伴侣某个基因发生突变，并且使它有能力区别哪个是自己产的卵，哪个是它同性伙伴的，贝利说。
The polar and egg nuclei of the female gametophyte are genetically identical.
雌配子体中的极核和卵核遗传上是同一的。
The polar and egg nuclei of the female gametophyte are genetical ly identical.
雌配子体中的极核和卵核遗传上是同一的。
We studied relationships among body size, clutch size, and egg size and female reproductive characteristics in five species of oviparous colubrid snakes from Zhoushan islands, Zhejiang, China.
阐明五种游蛇科动物雌体大小、窝卵数和卵大小之间的关系和雌性繁殖特征的种间差异。
Egg hatchability was affected significantly by irradiation but there was no significant difference in eggs laid per female, fecundation eggs as increasing treated doses.
受精卵的孵化率受辐照剂量的影响显著，但每雌产卵量、受精卵数对辐照剂量的增加反应不显著。
The female reproductive cell or gamete of animals; egg.
卵细胞雌性再生细胞或动物的配子；
The regression equations of the rates of hatching, larvae survival, emergence, the egg number laid by a female and population trend indices against temperatures were analyzed.
测定了不同温度下莲雾毒蛾各虫态的存活状况，并就卵孵化率、幼虫存活率、蛹羽化率、产卵量和种群趋势指数等指标与温度的关系进行相关性分析。
CONCLUSION: the positive circulating membrane antigen reaction is closely related to egg laying by the female worms.
结论：循环表膜抗原阳性反应与雌虫排卵密切相关。
The hexane extracts of female accessory glands and egg masses elicited stronger reaction by the parasitoid, but without significant difference between both.
卵表提取物和附腺提取物比鳞片提取液对赤眼蜂引诱作用强，两者对赤眼蜂的引诱作用没有明显差异。
The 4-week-old turkeys were infect by the suspension of infectious eggs through the cloaca and oral infection, contrast to oral infection with the Heterakis fresh egg, female Heterakis and earthworms.
用此感染性虫卵悬液通过泄殖腔和口腔接种感染4周龄的火鸡、未培育的新鲜虫卵和异刺线虫雌虫感染火鸡、以及来自三个地方的蚯蚓感染火鸡相对比。
If you see one or a few eggs scattered around throughout a period of hours or days, your female may be egg-bound, which means that her eggs are not able to properly exit her body.
如果你看到几个小时或者几天内零散地产下一个或者更多的卵，那么你的雌性鬣蜥可能难产，这意味着卵不能全部排出体外。
When the male and female penguins after love, a penguin mom conceived and gave birth to little penguin egg.
当雌雄企鹅恋爱过后，企鹅妈妈孕育并诞下小企鹅蛋。
In both parasitoids, there was no significant difference in number of wasps per host egg, female ratio of progeny and percentages of wasps with parasitization between target host and C. sinica.
在子代性比、每寄主出蜂数和寄生雌蜂百分率几项指标上，两种赤眼蜂在各自靶标和中华通草蛉之间均差异不显著。
This week, Chinese scientists said they grew an embryo by introducing cells from a dead female panda into the egg cells of a Japanese white rabbit.
本周，中国的科学家们说他们通过将一只死去的母熊猫的细胞引入一只日本白兔的卵中的方法，培养了一个胚胎。
The treatment for egg-binding is to spay the female, which involves the removal of both the ovaries and any eggs present.
应对难产的方法是切除雌性的卵巢，就是摘除卵巢和所有的卵。
The ruse allows the parasites to hitch a ride on the males and ultimately reach a treasure-trove of pollen and nectar that surrounds the female bee's egg.
这个花招使斑蝥搭乘一段旅行，借助雄蜂最后到达雌蜂孕育后代的宝地—那里有的是花粉和王浆。
But it isn't easy to produce thick egg shells. It requires a lot of calcium, more than female penguins normally get in their diets.
但不是那么容易就能生产厚的蛋壳的，这需要比它们从食物中能取的还要多的钙。
The polar and egg nuclei of the female gametophyte are genetically identical.
子体中的极核和卵核遗传上是同一的。
The polar and egg nuclei of the female gametophyte are genetically identical.
子体中的极核和卵核遗传上是同一的。
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