这关键区别瞬态和平衡多态性之间是基于等位基因的行为方式。瞬态多态性是逐步替代一个allele一个基因另一个等位基因虽然平衡的多态性是维持一个基因的两个不同等位基因随时间的维持
遗传多态性是特定DNA的一个或两个或两个或多个变体。瞬时和平衡的多态性是由于基因的两个替代等位基因而产生的两种类型的多态性。在给定基因座的两个替代等位基因的瞬时多态性中,一个等位基因被另一个等位基因逐渐取代。在平衡的多态性中,两个等位基因相互平衡。两个版本的基因都保持在人群中。
CONTENTS
1。概述和关键差异
2。什么是瞬态多态性
3。What is Balanced Polymorphism
4。瞬态和平衡多态性之间的相似之处
5。并排比较 - 瞬态与表格平衡多态性
6.Summary
什么是瞬态多态性?
瞬态多态性可以在人群中看到when there are two alleles present in a gene pool. These polymorphisms are located in a particular gene locus. One of the two alternate forms of the allele is progressively replaced by another allele during inheritance. This happens due to strong environmental pressure to eliminate one allele from the gene pool. This as an unbalanced, unstable polymorphism and is not predictive.
例如,我们可以注意到居住在工业区域的飞蛾被烟雾变黑。由于造成过量黑色素产生的等位基因的逐步替代,在受污染区域中,飞蛾在污染的地区变得更加黑色或黑色。因此,飞蛾的光和深色黑色素变体是一种由工业黑人或方向选择引导的短暂多态性。
什么是平衡的多态性?
Balanced polymorphism is a stable polymorphism that can be maintained throughout inheritance. In this polymorphism, the organism will have both alleles of the gene, rather than having two copies of either version alone. Therefore, in a population, both versions of the gene will be maintained. Usually, a balanced polymorphism is maintained in the heterozygous condition. In some cases, this brings about a heterozygote advantage. For example, we can consider two alleles of a gene that are responsible for producing enzymes that detoxify poisons and other chemicals. One allele has a higher activity of detoxifying chemicals, but it causes accumulation of harmful intermediates. The other allele has low activity, but the harm is less. Hence, the best situation for the organism is to have one copy of each allele. This is a type of a balanced polymorphism.
Moreover,镰状细胞性贫血在非洲人中,可以通过平衡的多态性来很好地解释。杂合子没有贫血。他们也对疟疾有抵抗力。因此,镰状细胞贫血的杂合优势是均衡多态性的结果。
瞬态和平衡多态性之间有什么相似之处?
- 瞬时和平衡的多态性会导致表型变化。
- 它们可能会改变蛋白质表达。
- 它们涉及基因的等位基因。
- 两者都发生在基因的基因座。
What is the Difference Between Transient and Balanced Polymorphism?
瞬时和平衡的多态性是人群中可见的两种类型的多态性。瞬态多态性是指另一个等位基因逐渐置换一个基因等位基因。相反,平衡的多态性是指随着时间的推移维持两个基因的两个不同等位基因。因此,这是瞬态和平衡多态性之间的关键区别。换句话说,一个等位基因参与了短暂的多态性,而基因的两个等位基因都参与了平衡的多态性。
下面的信息图总结了瞬时和平衡多态性之间的差异。
摘要 - 瞬态与平衡多态性
瞬时和平衡的多态性是人群中看到的两种类型的多态性。两者都会引起表型变化并影响基因表达。当一个等位基因被另一个壳体多态性取代时,会发生瞬态多态性。因此,只有一个等位基因受到瞬态多态性的影响。相反,随着时间的流逝,两个不同版本的基因(两个不同的等位基因)在平衡的多态性中保持。因此,维护两种类型的等位基因。因此,这是瞬态和平衡多态性之间的关键区别。
参考:
1。Ford, E. B. “POLYMORPHISM.” Wiley Online Library, John Wiley & Sons, Ltd, 21 Jan. 2008, onlinelibrary.wiley.com/doi/10.1111/j.1469-185X.1945.tb00315.x.
2.“平衡多态性|百科全书”。Encyclopedia.com,2020年,在这里可用。
图片提供:
1。“Biston.betularia.f.carbonaria.7209” By Chiswick Chap – Self-published work by Chiswick Chap(CC BY-SA 3.0)通过下议院维基梅迪亚
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