身体颜色,共生体和基因组区域对豆虫翅膀可塑性变化的影响
Lauren E Gregory1, Rose M H Driscoll1, Benjamin J Parker2
1Department of Biology, University of Rochester, Rochester, New York, USA.
Molecular ecology
|February 4, 2025
概括
豆的可塑性变化是复杂的,受到细菌共生体和遗传因素的影响,而不是身体颜色. 部位被重新定位,腹部A被确定为翅膀可塑性的潜在基因.
科学领域:
- 进化生物学是进化的生物学.
- 遗传学 遗传学 是一个
- 现型性可塑性 现型性可塑性
背景情况:
- 适应性表型可塑性允许单个基因型产生适合不同环境的多样化表型.
- 塑性变化在生态上是显著的,但它的遗传基础仍然不太清楚.
- 以前的研究表明,豆虫的身体颜色和翅膀可塑性之间存在联系.
研究的目的:
- 为了研究豆虫翅膀可塑性变化的遗传基础.
- 为了测试身体颜色决定位置 (tor) 影响翅膀可塑性的假设.
- 识别导致可塑性变化的遗传因素.
主要方法:
- 研究了天然种群和 pea aphids 的遗传映射种群.
- 进行全基因组关联分析以确定与翅膀可塑性相关的基因.
- 使用遗传映射重新定位了tor位置.
主要成果:
- 在豆虫中,体色和翅膀可塑性之间没有发现任何关系.
- 托尔位点被重新定位到第三个自体.
- 细菌共生体Regiella与增加的翅膀可塑性有关.
- 一个霍克斯基因,腹部-A,被认为是翅膀可塑性变异的候选基因,尽管没有达到全基因组意义.
结论:
- 豆虫的翅膀可塑性变化不受身体颜色的影响.
- 塑性变异是一种复杂的特征,受遗传因素和微生物共生体的影响.
- 细菌共生体Regiella在调节翅膀可塑性方面发挥着作用.
相关概念视频
Background and Environment Affect Phenotype
6.4K
Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
6.4K
Position-effect Variegation
6.3K
In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.
6.3K
Epistasis
45.5K
In addition to multiple alleles at the same locus influencing traits, numerous genes or alleles at different locations may interact and influence phenotypes in a phenomenon called epistasis. For example, rabbit fur can be black or brown depending on whether the animal is homozygous dominant or heterozygous at a TYRP1 locus. However, if the rabbit is also homozygous recessive at a locus on the tyrosinase gene (TYR), it will have an unshaded coat that appears white, regardless of its TYRP1...
45.5K
Dihybrid Crosses
73.5K
Overview
73.5K
Gene Flow
34.7K
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
34.7K
Genetics of Speciation
19.0K
Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
19.0K


