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Evolutionary change in one trait can elicit evolutionary changes in other traits due to genetic correlations. This constrains the independent evolution of traits and can lead to unpredicted ecological...
A Washington State University biologist has found the genetic mechanism that lets a fish live in toxic, acidic water. The discovery opens new insights into the functioning of other “extremophiles” and...
摘要 本文应用染色体荧光原位杂交(FISH)技术,利用人9号和14号染色体特异探针,对深低温冻存和长期传代的黑叶猴细胞株染色体畸变进行了分析。确定在长期冻存和传代过程中,一些黑叶猴细胞在No.12和No.17染色体之间发生了易位,一条 No.17染色体发生断裂,断裂点在17q13,断裂片段17q13-17qter易位到一条 No.12染色体长臂末端,形成一条小的中着丝粒的和一条具较长长臂的衍生染色...
摘要小鼠X、Y和8号染色体特异的DNA探针,与经DTT(dithiotreito)和LS(lithium-3,5-diiodosalicylic acid)解聚的小鼠附睾精子进行三色荧光原位杂交(fluorescence in situ hybridization,FISH),以检测子中的染色体数目异常,并与MMⅡ染色体分析比较。结果表明精子三色FISH具有以下优点和特点:(1)方法敏感稳定,且简...
The worldwide decline of natural fish stocks, the accumulation of chemical pollutants in aquatic environments and increasing world consumption of fish products has provided an impetus in many countrie...
In this study, the detection of mutagenic-carcinogenic pollutants in water by using cytogenetic methods in fish was examined along with the necessity of sister chromatid exchange (SCE), anaphase aberr...

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