The effect of selection was closely related with parent characteristics. The effect of different selection methods to select protein content varied with cross types.

选择效果与亲本特点有密切关系，不同选择方法对蛋白质含量的选择效果因杂交组合类型不同而异。

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For instance, the short stature of pygmies could be a side effect of selection for early childbearing in populations where mortality is high, rather than an adaptation in itself.

比如，矮人的短小身材可能是受高死亡率地区的群体早生早育影响而产生的副作用，而不是自身的适应性。

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The evolutionary effect of competition on species has been referred to as "species selection"; however, this description is potentially misleading.

竞争对物种的进化效应被称为“物种选择”；然而，这种描述可能具有误导性。

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Vintage players tend to be good, because of a selection effect: If you use a cane and still have a job in the major leagues, it's usually because you can play.

WSJ: New York Yankees: Getting Old Is Nothing to Fear��Tim Marchman

Mr Heckman confronted the sample-selection problem: in terms of the examples just given, for instance, the effect on the results if the workers who answered the questionnaire differed in important ways from those who did not.

ECONOMIST: Economics focus

But both the selection bias and regular-phone-use definition might be expected to mask any adverse effect of phones.

ECONOMIST: The Interphone study: Mobile madness | The