In addition, an improved real-coding copulation operator was also raised.

另外，给出了一个改进的实数编码的两点交叉算子。

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For a male that stands less than a 20 percent chance of fathering offspring in no more than eight weeks of life, becoming snack food is a small price to pay for a shot at copulation.

而对于雄性蜘蛛来说，在它不到8个星期的寿命里面，繁殖后代的机会只有20%，变成了别人的小吃和传宗接代相比就是小巫见大巫了。

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The function of copulation calls in female primates has been debated for years.

BBC: Monogamy shunned by female chimps

Our findings highlight the fact that these females use their copulation calls in highly tactical ways to minimise the risks associated with such competition.

BBC: Monogamy shunned by female chimps

Today, turtles often begin the sex act in open waters, sinking during copulation.

MSN: Fossilized turtles' sex act frozen in time - Technology & science - Science - LiveScience | NBC News