英语释义

1. random changes in gene frequency especially in small populations when leading to preservation or extinction of particular genes

片语

genetic or antigenic drift遗传性或抗原性漂移

genetic c drift遗传漂移

random genetic drift随机遗传漂变

radiation genetic drift辐射遗传学

英汉例句

• evolution myths: natural selection is the only means of evolution-much change is due to random genetic drift rather than positive selection.

  错！其实，不同个体之间的很多细微变化都源自「遗传漂变」，而不是自然选择。

• genetic drift reduces diversity in populations more quickly than mutation can introduce it.

  遗传漂变减少人口差异的速度比变异要快得多。

• whether speciation is achieved normally via genetic drift or natural selection is the subject of much ongoing discussion.

  究竟正常的物种形成是通过遗传漂变还是通过自然选择达到的，是现在正在进行热烈讨论的话题。

• mating system and genetic drift resulted from environmental fragment may responsible for the present genetic structure of the species.

  马蹄香独特的遗传结构是其自交为主的繁育系统、生境片段化、地理隔离以及克隆生长等因素共同影响的结果。

• this study results indicated that high level genetic variation was still in red mirror carp population, but genetic drift and artificial se- lection had much effect on population.

  这表明红镜鲤群体仍具有较高的变异水平，但遗传漂变和人工选择已对群体产生了较大影响。

• scientists have found another kind of genetic drift in neutral traits.

  除此而外，科学工作者还发现中性特征方面的另外一种遗传偏移。

• minimizing the genetic drift in fertility was key to the purification and reproduction of thermo photo sensitive genic male sterile(tpsgms)lines of wheat.

  最大限度控制育性的遗传漂移，是小麦温光敏核不育系提纯中要解决的主要问题。

• genetic drift can even counteract natural selection.

  基因漂变甚至可以抵消自然选择。

• genetic drift is change in the genetic composition of a population arising as a consequence of sampling of gametes in a finite population.

  所谓遗传漂变就是指：在一个有限的种群内，由于配子的随机取样使得遗传组成在种群内发生变化的现象。

• 「over time, genetic drift can occur, 」 hackett says.

  「随着时间推移，遗传漂变出现了」，哈科特说。

• random genetic drift has certainly played a big role in human evolution.

  随机漂变对人类进化的作用的确巨大。

• the genetic diversity of endangered species may be lost due to genetic drift and inbreeding, but this loss is more likely to be a symptom of endangerment rather than its cause.

  濒危物种的遗传多样性可能会由于遗传漂变、近交的作用而丧失；但这种丧失更可能是濒危的结果而不是濒危的起因。