来自《耶鲁大学开放课程：心理学导论 第13集》

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  where he imagines two plots of
  这里是他设想的两小块土地
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  --what are you--some sort of wheat, yeah,
  这是一些小麦
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  two plots of land
  两块地
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  and each one has a set of seeds and--
  每块一组种子
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  Oh, no. They're over there.
  啊不 在这
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  No. Anyway, one of them you fertilize a lot.
  不 无所谓了 其中一块大量施肥
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  The other one you fertilize a little.
  另一块只施一点肥料
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  Now, within each plot
  现在 每块土地之内
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  how much the seed grows
  种子的长势
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  is actually largely determined by the genetics of the seed.
  确实很大程度上取决于种子的基因
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  And so, you'd find high heritability
  于是 你可以看到种子的生长
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  for growth in the seeds.
  有很高的遗传性