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- A group of organisms having common ancestors and certain distinguishable characteristics, especially a group within a species developed by artificial selection and maintained by controlled propagation. 属一群拥有共同祖先和明显特征的有机体,尤指属于同一物种的一群,通过人工选择来发展,通过有控制的繁殖来维持
- Dawkins hoped to traverse a library of tree shapes by artificial selection and breeding. 道金斯希望通过人工选择和繁育来全面构造树形信息库。
- They were natural and wild, not the product of generations of artificial selection. 那是自然的,是野生的,并非几代的人工选择的产品。
- Lower level of total germplasm diversity is probably due to a long history of artificial selection and gene loss. 柚的较低的有效等位基因数目与基因多样度可能由于人工选择及资源流失造成。
- Note that artificial selection involves crossbreeding between genetic varieties of the same species and thus is not a form of speciation. 人择包含同物种间基因多样性的杂交繁育,也因此这不是物种形成的形式。
- However, this condition doesn't seem to be possible in nature.Therefore, unless we process artificial selection, anthropoids will unlikely evolve into humans. 但问题是,这样的条件在自然界中可遇而不可求,所以,除非人工制造,否则,现今的类人猿是不大可能进化成类似人类的生物的。
- Artificial selection has yielded food crops with higher yields, cows that give more milk, trees that grow faster, and many different types of dogs and cats. 人工选择已产生与粮食作物产量更高,牛给更多的牛奶使树木生长速度更快,许多不同类型的狗和猫。
- Both Sims's selection of images and Koza's selection of software via the breeding of logic are examples of what biologists call breeding or artificial selection. 辛姆斯的图像遴选和柯扎那通过逻辑的繁衍进行的程序遴选都是生物学家称为育种或人工选择的例子。
- A group of organisms having common ancestors and certain distinguishable characteristics,especially a group within a species developed by artificial selection and maintained by controlled propagation. 属一群拥有共同祖先和明显特征的有机体,尤指属于同一物种的一群,通过人工选择来发展,通过有控制的繁殖来维持。
- In addition, artificial selections for economic tarits could change Amy-1 gene frequencies. 另外,人工选择也可能造成Amy-1基因频率的改变。
- These above indicated that after their long environmental adaptations the introduced varieties produced basal germplasms with rich phenotype variations due to natural and artificial selections. 以上研究说明引进品种经过长期的环境适应、自然选择和人工选育后,产生了表型变异较为丰富的基础种质类型。
- This dress is made of artificial fibers. 这件衣服是人造纤维的。
- Her artificial gaiety disguised an inner sadness. 她以矫揉造作的快乐掩饰著内心的悲痛。
- What the genetic variation was declined slowly is possible due to the continuous artificially selection for the early silking and the genetic drift induced by selection intensity or smaller effective population size. 所有结果均表明选择群体的遗传变异逐渐减小,这可能是由于连续对开花期性状定向选择的结果,也可能还与群体的有效含量较小和选择强度大所引起的遗传漂变有关。
- I can't stand his artificial smiles. 我受不了他的假笑。
- I was fitted an artificial tooth by the dentist. 牙医给我镶了颗假牙。
- So, by artificially selecting big, long-lasting flowers, breeders have all but erased another desirable characteristic. 因此,通过人工地选择大,花期长,放弃其他希望的特征进行育种。
- That shop has a fine selection of cakes. 那家商店有各种精美的糕点供我们选择。
- That store has a good selection of furniture. 那家店有很多家具可供挑选。
- Artificial heating hastens the growth of plants. 人工供暖能促进植物生长。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries