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selective pressures造句

"selective pressures"是什么意思   

例句與造句

  1. the genetic differentiation of among populations might be caused by human selective pressures and barriers to gene flow
    群體間一定程度的遺傳分化可能是人為選擇壓力和基因流障礙引起的。
  2. the abuses of antibiotics in medicine and livestock exposed to environmental bacteria lead to a large-scale dissemination of antibiotic-resistance bacteria in aquatic environment under selective pressure and the resistant organism could transfer resistance genes across the genus and species by plasmid and integron, antibiotic resistance microbes are common in aquatic environment and the aquatic environment has become a major reservoir for antibiotic-resistant microbes
    摘要臨床和畜禽業(yè)抗生素的濫用導(dǎo)致微生物在選擇性壓力作用下獲得并維持耐藥性,并有可能通過質(zhì)粒和整合子將耐藥基因在相同或不同種屬中廣泛傳播轉(zhuǎn)移,最終導(dǎo)致多重耐藥。
  3. the most variable regions between hi and b strain reside in vp2 and vp3 overlap region ( 319-470 ), which are supposedly exposed to the surface of the capsid . it is possible due to the selective pressure from host immune system . the largest divergence between the gpv-h1 and mdpv capsid polypeptides located between the start cordons of vp2 and vp3
    h1株與gpv-b株氨基酸的差異集中在vp2、vp3重疊區(qū)的319-470位之間,這與預(yù)期暴露于病毒最表面的區(qū)域相吻合,可能是宿主免疫篩選導(dǎo)致的變異;gpv-h1株和mdpv之間還存在另一高變區(qū),位于vp2和vp3起始密碼子之間,這可能與兩病毒有不同宿主域相關(guān)。
  4. It's difficult to find selective pressures in a sentence. 用selective pressures造句挺難的

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