交配

Belot and Francesconi discovered that a strong socialtrend towards "assortative mating" means that although educated,high-achieving men are not interested in marrying a rich woman,they do like educated high-achieving women, rather than shallowgirls with shiny nails.

贝洛和弗兰切斯科尼发现，存在一种强烈的&选型交配&社交趋势，即尽管受过教育的成功男士对与有钱女士结婚不感兴趣，但他们确实喜欢受过教育的成功女士，而不是指甲闪亮的浅薄女子。

Theeffective size of populations under maximum negative or positive assortive mating is larger thanrandom mating of selected parents.

同质和异质选配情况下，群体有效大小较选择的亲本随机交配要大，特别是异质选配。因此，采用异质选配，可以使选育与保种有机地结合起来。

The strong FSGS and large genetic patches may induced high level of biparental inbreeding, which reduced effective outcrossing rate.

综合野生大豆遗传多样性水平、遗传结构与交配系统的研究进行分析，在制定野生大豆保护策略特别是原位保护策略时，保持种群生境一定程度的自然扰动可以打破种群内空间遗传结构或是减弱空间遗传结构，这将提高有效异交的频率，增加种群内杂合子的频率，从而维持种群内较高的遗传多样性水平，保持野生大豆的进化潜力。

The main floral visitors were insects of Lycaenidae, Pieridae and Braconidae.

三叶鬼针草所具有的灵活交配机制是其入侵成功的重要因素。

All these microsatellites can be used in the study of Castanopsis chinensis genetic diversity, mating system, and pollen flow or seed dispersal.

这些引物可用于锥栗的遗传多样性、交配系统和花粉及种子扩散水平的研究，为研究锥栗的居群遗传学和保护生物学提供了良好的基础。

He may attempt cloacal alignment and will dig into scrape her sides with his spurs.

你不必为上面这个情况感到担心，因为这是交配过程中必须的一些动作。

Intercourse happens when these two openings are brought together in what ornithologists refer to as a cloacal kiss.

性交的过程就是两个生殖器开口凑到一起，鸟类学家称之为泄殖腔交配。

Intercourse happens when these two openings are brought together in what ornithologists refer to as a cloacal .

性交的过程就是两个生殖器开口凑到一起，鸟类学家称之为泄殖腔交配。

In most species, of course, neither sex hangs around long enough to light even a metaphorical post coital cigarette.

当然，在多数物种里，两性交配后相依的时间还不足以点燃一支烟。

Now in that case this male is simply near the peak of his life and he's gotten abundant spermatophores produced over the course of that life and he's had few or maybe no opportunities to copulate with a conspecific female.

现在这个例子中，雄章鱼可能接近它生命的顶点、得到毕生制造的丰富精囊，而且它有很少甚或没有机会与同种雌章鱼交配。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。