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词语天择拆分为汉字：
天字的拼音、笔画、偏旁部首、笔顺、繁体字，天字字源来历，天字演变
在地面以上的高空：～空。～际。～罡（北斗星）。～渊（上天和深渊，喻差别大）。～马行空（喻气势豪放，不受拘束）。在上面：～头（书页上面的空白）。气候：～气。～冷。季节，时节：冬～。日，一昼夜，或专指昼间：今～。指神仙或他们所住的地方：～上。～……
择字的拼音、笔画、偏旁部首、笔顺、繁体字，择字字源来历，择字演变
1. 择 [zé]2. 择 [zhái]择 [zé]挑拣，挑选：～取。～优。抉～。～善而从。饥不～食。择 [zhái]义同“择”（zé），用于口语：～不开（分解不开；摆脱不开）。～菜。～食。……
汉语拼音：tiān zé
谓自然选择。认为在生物进化过程中适者生存、不适者灭亡的学说。
梁启超 《新民说·论合群》：“盖深知夫处此物竞天择界，欲以人治胜天行，舍此术未由也。” 鲁迅 《坟·人之历史》：“天然之力，亦择生物，与人择动植无大殊，所异者人择出人意，而天择则以生物争存之故，行于不知不觉间耳。”
Over the millennia, the long coevolution of H. pylori and H. sapiens has put intense selective pressure on both species.
幽门螺旋菌和现代智人几千年来的共同演化，对两个物种都带来激烈的天择压力。It matters little when a language becomes moribund and disappears. It's natural selection, applied to culture. The strongest wins.
当一种语言奄奄一息且消失不是什麽大不了的事，这是一种天择，与文化有关，强者终究是最后的赢家。Because the risk is so much lower, Nunney argues, natural selection cannot drive the spread of new defenses against retinoblastoma.
伦尼认为，因为风险非常低，天择无法驱使针对视网膜胚细胞瘤新预防措施散布到族群中。In contrast, two groups that are genetically similar to each other might be exposed to different selective forces.
另一方面，两个遗传组成相似的人群，也许会暴露在不同的天择压力下。Population geneticists have also provided insight into natural selection by describing it mathematically.
族群遗传学家也以数学的方式描述天择，并且提出看法。HAR1 is also the first documented example of an RNA-encoding sequence that appears to have undergone positive selection.
此外，HAR1也是已知第一个可能受到正向天择的RNA编码序列。Recent research suggests that natural selection may have altered genes in ways that make cancer cells more dangerous.
最近的研究指出，天择所改变的基因可能还让癌细胞变得更危险。silently and insensibly working, whenever and wherever opportunity offers.
天择寂静无声、不知不觉地运作，不管何时何地都是机会。Natural selection keeps their clusters from blurring by favoring new mutants that are even better adapted to their niche.
比较适应生态区位的突变受到天择青睐，而维持住群丛间的分野。天择, 自然选择
natural selection
海里得天择压力较大, 因此生存较为困难。
Selection pressure is higher in the sea so surviving is more difficult.
海里的天择压力较大，因此生存较为困难。
Selection pressure is higher in the sea so surviving is more difficult.
在人类的演化过程中，天择为何青睐人类突出的脑力？
What favored the evolution of such distinctive brainpower in humans or, more precisely, in our hominid ancestors?
天择产生某些对抗癌症的方法，但未能完全消弭癌症。
Natural selection has favored certain defenses against cancer but cannot eliminate it altogether.
族群遗传学家也以数学的方式描述天择，并且提出看法。
Population geneticists have also provided insight into natural selection by describing it mathematically.