名词解释: 1,Genetic/antigenic shift: 基因转换/抗原转换: ---短时间内两个病毒的基因一起整合进宿主细胞,产生含有完全不同基因片段的新病毒,会引起全球大流行。 2,Genetic/antigenic drift: 基因漂移/抗原漂移: ---经过较长时间的...
病毒的变异类型包括遗传漂变(genetic drift)和遗传转移(genetic shift)两种类型。()A.正确B.错误
病毒的变异类型包括遗传漂变(genetic drift)和遗传转移(genetic shift)两种类型。() A. 正确 B. 错误 如何将EXCEL生成题库手机刷题 如何制作自己的在线小题库 > 手机使用 分享 反馈 收藏 举报 参考答案: A 复制 纠错举一反三 Where is the Temple of Heaven located in China? A. Beijing. B. Tianjin....
1999. Genetic drift and genetic shift dur- ing feline coronavirus evolution. Vet. Microbiol. 69: 139-141.Vennema, H. (1999). Genetic drift and genetic shift during feline coronavirus evolution. Vet Microbiol 69, 139-141.Vennema H (1999). Genetic drift and genetic shift during feline ...
Somatic Mutations | Definition & Differences Causes of Mutation | Spontaneous, Mutagen & Prevention Antigenic Shift & Drift | Overview & Differences Chemical Mutagen Agents & Examples Start today. Try it now Biology: High School 29 chapters | 238 lessons | 9 flashcard sets Ch 1. Basic...
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Multiple alleles at a locus are maintained in the population gene pool at higher frequencies than expected from genetic drift. Two possible causes are heterozygote advantage (higher fitness of heterozygotes compared with homozygotes) and frequency-dependent selection (fitness of a phenotype depends on ...
6, NO. 3, 2021 Genetic Risk Stratification A Paradigm Shift in Prevention of Coronary Artery Disease Robert Roberts, MD,a Chih Chao Chang, MD,a Trevor Hadley, MDb HIGHLIGHTS CAD is a pandemic that can be prevented. Conventional risk factors are inadequate to detect who is at risk early...
The alternative model, which showed a shift towards larger ω o1 values in the HNB compared with the MDB, was preferred over the null model that assumed that ω o1 values were the same in both basins. The null RELAX model (logL = − 17533.9, 72 parameters) estimated that in both ...
The random genetic drift that accompanies the founding of new populations at the edge of the expansion front is known as the founder effect (Holgate, 1966; Hartl and Clark, 2007). Founder effects may leave a strong genetic signature in the newly established populations by reducing genetic ...