With rising temperatures, this endangered reptile could produce all male offspring by 2085, guaranteeing its extinction, a new study finds.

新西兰鳄蜥就面临着这种孤独而又可怕的命运。 一个新的研究表明，随着温度持续上升，这个濒临灭绝的爬行类动物到2085年时生育的后代可能都将是雄性。

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These sons are in turn strong and outdo other weaker male offspring to reproduce - thus ensuring survival of the fittest and of the family line.

相对于其他瘦弱的男孩而言，这些强壮的男孩更容易繁殖—由此确保最强壮的后代能够生存并保持家族的延续。

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Kibabu and two of his male offspring, Fuzu and Fataki, are scheduled to leave Taronga in 2013 to form a bachelor group at Orana Wildlife Park in New Zealand.

他和他的两个同族兄弟，富足和法塔基，计划在2013年告别塔朗加去组建位于新西兰的奥拉纳野生动物公园，组建第一个培育基地。

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And so he said, if you start off with a male and a female, at the end of one month they have an offspring. Let's assume they have two offspring. At the end of the next month let's assume those offspring have offspring. Again a male and female.

在13世纪的时候想要计算兔子的数量,就是一个月大的兔子,再过一个月就可以进行交配,所以它说如果你一开始有一公一母两只兔子,在一个月末它们就可以生小兔子,让我们假设它们生了两只小兔子。

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China's strong cultural imperative for male offspring has led many families to do whatever they must to ensure that their one permissible child is a son.

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In species where the only thing that a male contributes to his offspring is his sperm, he is usually, as theory predicts, more or less indiscriminate in his courting.

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As a result, dead males may act as plugs to prevent other males from copulating, ensuring that the suicidal male, not a rival, fathers the offspring.

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