Since only one female usually lays eggs in a given larva, it would pay her to produce one male only, because this one male could fertilize all his sisters on emergence.
因为通常只有一只雌性在一个特定的幼虫中产卵，所以它只会产生一只雄性，因为这只雄性可以在孵化时使它所有的姐妹受精。
The male and female birds take turns in sitting on the eggs.
雄鸟和雌鸟轮流伏窝。
Male albatrosses share in the incubation of eggs.
雄性信天翁参与孵卵。
All the male penguins will build nests if the female penguins lay eggs.
如果雌性企鹅下蛋，所有的雄性企鹅都会筑巢。
If they are females, a male may fertilize their eggs.
若它们都是雌性，就要一只雄性来孵化她们的卵。
For example, embryonic pig-nosed turtles become male or female depending on the temperature of the ground their eggs are laid in, while fully developed embryos can delay their hatching.
举例来说，处于胚胎时期的猪鼻龟会由其龟卵所埋之地的温度来决定其性别，而且已经发育完全的胚胎还能推迟它们的孵化时间。
The Y-chromosome, which carries the genes for maleness, comes from the father, so it cannot be the case that the mother is failing to ovulate “male” eggs.
携带男性基因Y-染色体来自于父亲，因此不可能是母亲无法排出“男性卵”。
It took two octopuses, a male and a female, to make the 56,000 eggs.
两只章鱼，一雄一雌，能产生56000个卵。
The female produce 250 eggs at a time and the male looks after them.
雌性草海龙一次大约能产卵250枚，而照看这些卵的任务却由雄性承担。
Males don't help the female build a nest, incubate the eggs, or raise the chicks-all they give her are their genes. The females are thus very choosy about which male they pick.
雄鸟不会帮助雌鸟建巢、孵卵或哺育雏鸟——它们能够奉献的只有基因而已，因此，雌鸟在选择雄鸟时格外挑剔。
Chickens are now specifically bred for either eating or laying eggs. Male "egg-laying" chicks, unable to fulfill their purpose, are all killed right away, often very inhumanely.
鸡现在的饲养目的就是吃掉或下蛋，下出来的蛋若是雄的，不予理会任何他们生来的意义，立即处死，通常都是非常没有人性的方式。
The male leaves the female to hatch her eggs and looks for food.
雄性离开雌性去孵蛋和寻找食物。
The female bird incubates the eggs for about sixteen days while the male brings food.
雌鸟孵蛋差不多十六天，在这期间，雄鸟带回食物。
The fossil-rich area mayharbor thousands of bones, including three-dimensional male and female skullsand the first three-dimensional eggs.
该地区化石众多，存在的动物化石骨骼可能成千上万，包括完整的雄性和雌性翼龙的头骨化石及首个完整的翼龙蛋化石。
The females then go off to look for other mates while the male stays to incubate the clutch, which can contain 25 to 50 eggs.
雌性鸵鸟然后去寻求其他的配偶，而男性停留，以孵化卵，其中可以包含25至50鸟蛋。
The male will scoop up the eggs and spit them into the nest.
男性将铲起的鸡蛋和吐到巢他们。
Tomato Clownfish : A male tomato clownfish (Amphiprion frenatus) tends his field of developing eggs like a gardener, scooping away ones with dead embryos.
番茄小丑鱼，一条雄性番茄小丑鱼（学名白条海葵鱼）像园丁一样照料一片发育中的受精卵，同时铲掉已死的胚体。
In late winter, while his mate stays on the nest with their clutch of two or three eggs, the male heads off to find food for both of them, carrying rats, mice, and squirrels back to the nest.
在冬末，而它的伴侣停留在巢内孵化两个或三个蛋，雄猫头鹰去寻找食物为它们两口，运输大鼠，老鼠，松鼠回巢。
Xi said the researchers only release male mosquitoes, which don't bite. The eggs produced by females mating with Wolbachia-infected males are infertile, which leads to reduced mosquito populations.
奚说研究员只是放了不咬人的雄性蚊子，而雌性蚊子产的卵与感染了沃尔·巴克氏细菌的雄性蚊子配对后会造成不育，造成蚊子数量大幅减少。
Male anemonefish frequently visits the nest to fan the eggs with his pectoral fin and to remove dead eggs and debris with his mouth.
雄性小丑鱼的责任是守卫著正在孵化的胚胎；牠还经常为巢穴打扫或去除己死的胚胎。
The Y-chromosome, which carries the genes for maleness, comes from the father, so it cannot be the case that the mother is failing to ovulate "male" eggs.
携带男性基因的Y 染色体来自于父亲，因此绝不可能是母亲没有排出“男孩卵”。
The Y-chromosome, which carries the genes for maleness, comes from the father, so it cannot be the case that the mother is failing to ovulate "male" eggs.
携带男性基因的Y 染色体来自于父亲，因此绝不可能是母亲没有排出“男孩卵”。
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