|
|
|
|
 |
|
|
|
|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
These competences integrate the whole toolbox of natural genetic engineering, replication, transcription, translation, genomic imprinting, genomic creativity, enzymatic inventions and all types of genetic repair patterns.
|
| 例句来源 | |
Natural genetic engineering systems (including transposable elements) are capable of acting genome-wide and not just one site at a time.
|
| 例句来源 | |
By connecting transcriptional regulatory circuits to the action of natural genetic engineering systems, there is a plausible molecular basis for coordinated changes in the genome subject to biologically meaningful feedback.
|
| 例句来源 | |
In the last 50 years, molecular genetics has revealed features of DNA sequence organization, protein structure and cellular processes of genetic change that suggest evolution by Natural Genetic Engineering.
|
| 例句来源 | |
Studies of genetic change show that cells possess mobile genetic elements and other natural genetic engineering activities to carry out the necessary DNA reorganizations.
|
| 例句来源 | | 更多 |
|
|
|

| | Cairns suggested that the fluctuation test, which demonstrated the theory of random mutation-survival by natural selection, could not refuse that bacteria can mutate adaptively in response to a selective agent. The natural genetic engineering showed that bacteria could restructure their genome to adapt to around environment sometimes instead of passively bearing natural selection. These new achievements meant that biological evolution could be driven by other forces as well as by natural selection. Moreover... | | Cairns 提出,Luria 和Delbruck 的波动试验只是证实了随机突变———选择留存机制,并不能否定有定向突变存在. 天然遗传工程的存在则表明,生物在进化过程中并不总是被动地承受选择,有时也会主动地改变自己的遗传结构以适应环境. 这些新成果表明,自然选择不是驱动生物进化的唯一动力. 再者,无论是定向突变还是自然选择,它们解释的都是适应性进化,而适应性进化则只是生物进化中的一种非本质形式.事实上,解释适应性进化的达尔文学说,还不能回答生物如何从低级向高级进化的问题. | | 文摘来源 | |   |
|
相关查询: | |
对查询结果不满意
|
|
|
|