| 词汇 | example_english_genetic-evolution |
| 释义 | genetic evolutioncollocation in Englishmeanings of geneticand evolutionThese words are often used together. Click on the links below to explore the meanings. Or, see other collocations with evolution. genetic adjective uk /dʒəˈnet.ɪk/ us /dʒəˈnet̬.ɪk/ belonging or relating to genes (= parts of the DNA in cells) received by each animal or plant from ... See more at genetic evolution noun[U] uk /ˌiː.vəˈluː.ʃən/ us /ˌiː.vəˈluː.ʃən/ the way in which living things change and develop over millions ... See more at evolution Examples of genetic evolutionThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. However, cultural adaptations that increase the fitness of a specific genotype in a specific environment may ultimately affect geneticevolution. These processes are themselves products of geneticevolution but are nevertheless distinct from it. Can the cultural evolution of higher ethical values gain a direction and momentum of its own and completely replace geneticevolution? The most phylogenetically ancient process ultimately responsible for niche construction is geneticevolution. However, according to this perspective, culture has no power to codirect human geneticevolution through active modification or creation of selection pressures. Cultural learning thus lifts some of the burden of geneticevolution to explain characteristics of language. Note that it leaves open the possibility that the design process for a given behavioral adaptation is something other than geneticevolution by natural selection. We maintain that a focus on niche construction has important implications for the relationship between geneticevolution and cultural processes. It is likely that some cultural practices in contemporary human societies are still affecting human geneticevolution. Historically, evolutionary theory has suggested only two possible routes via which feedback from human cultural activities could influence human geneticevolution. It is one of the goals of population biology to develop sufficient mathematical models of geneticevolution, specifically changes in allele frequencies. Under such circumstances, culture is unlikely to affect the rate of geneticevolution. Selective migration in specific age groups would influence the selection intensity in a population and its geneticevolution. However, this initial conceptual model is too restricted and leaves us with a rather poor understanding of how human geneticevolution interacts with human cultural life. The interaction between geneticevolution, learning, and intervening adaptive processes will turn on specific facts about genetic constraints, learning biases, and the environment of the organisms involved. If the cultural inheritance of an environment-modifying human activity persists for enough generations to generate a stable selection pressure, it will be able to codirect human geneticevolution. Cultural niche construction can, of course, cause rates of environmental change that really are too fast for human geneticevolution to track, and it is probably doing so increasingly. Colarelli says culture is not stable enough to cause geneticevolution and that niche construction adds further instability. We believe that due recognition of the role of niche construction in the evolutionary dynamic should advance our understanding of the relationship between human culture and human geneticevolution. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. Want to learn more? Go to the definition of genetic Go to the definition of evolution See other collocations with evolution |
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