| 词汇 | selective-breeding |
| 释义 | selective breeding noun[ U ] biology specializeduk /sɪˌlek.tɪv ˈbriː.dɪŋ/ us /səˈlek.t̬ɪv ˈbriː.dɪŋ/ the process of choosing only plants and animals with desirable characteristics to reproduce选择育种;选配 Breeds & breeding American bully beget breeder breeding breeding ground brood mare father full-blooded heritage heritage breed inbred overbreed pedigree pedigreed puppy farm puppy mill stud teaser thoroughbred well bred selective breeding | American Dictionaryselective breeding noun[ U ] us/səˈlek·tɪv ˈbri·dɪŋ/ biology the process of choosing only plants and animals with desirable characteristics to reproduce Examples of selective breedingselective breeding Those that do produce fine wool include products of selectivebreeding. Genetic manipulation by selectivebreeding or direct molecular techniques is an established method for improving productive capacity and the regional usefulness of crops. By selectivebreeding humans were able to nurture specific traits in animals and plants, long before they had the means to directly manipulate the genome. The selectivebreeding of crops and animals demonstrates the tendency of mankind to pursue short-term advantage without considering the long-term consequences. However, in neither case is the scatter substantial enough to convincingly explain the postalsurvey results without invoking under-ascertainment and/or selectivebreeding. Selectivebreeding and directed molecular techniques address biological shortcomings of plants and animals and overcome environmental limitations. Heritable component of variation in ballooning behaviour estimated as only 10%, but selective breeding for short or long latency increased magnitude of these tendencies in both directions. In fact, in order to get the line difference in aggression, the selectivebreeding regimen necessarily includes a rigidly controlled rearing environment from generation to generation. The coherence of these findings supports the hypothesis that selectivebreeding differences for social behaviors has produced correlated changes in processes that affect the synthesis of immunederived molecules. Notification applies to plants whose novel traits are introduced through genetic engineering, but also to plants whose novel traits are the result of conventional selectivebreeding methods. Selectivebreeding for rapid growth of broiler chickens is not, of itself, a cause for concern. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The top champions are apparently a result of such selectivebreeding over generations. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The proponents of genetic modification often argue that there is an essential similarity between it and natural selectivebreeding. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Congenital ailments are an inherent problem in dog breeding and in many instances they can be avoided by careful selectivebreeding. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 We are not talking about treatment and cure, but about culling and search-and-destroy operations—in other words, selectivebreeding. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 See all examples of selective breeding 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. |
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