相关实验视频

Updated: Jan 17, 2026

Following the Dynamics of Structural Variants in Experimentally Evolved Populations

Following the Dynamics of Structural Variants in Experimentally Evolved Populations

Published on: February 3, 2023

孟德尔特征的主导地位的演变与环境可塑性的演变有关

Yuichi Fukutomi¹, Alexandra Phillips-Garcia¹, Jingqi Liu¹

¹Department of Evolution and Ecology, University of California - Davis, Davis, CA, USA.

Evolution; international journal of organic evolution

|September 19, 2025

概括

遗传优势和表型可塑性通过发育系统联系在一起. 在Drosophila颜色变态中,等位基因主导的差异是由温度依赖的表型可塑性解释的.

科学领域:

进化遗传学的进化遗传学
发育生物学是发展生物学.
动物行为动物行为

背景情况:

基主导和表型可塑性影响遗传变异如何转化为表型.
这两种现象都可能导致非线性表型变化,以应对遗传或环境变化.
这表明共享的发展机制可能会将主导性和可塑性联系在一起.

研究的目的:

研究基因主导和表型可塑性之间的机制联系.
检查Drosophila montium物种中仅限女性的颜色二态.
确定影响主导关系的遗传基础和进化因素.

主要方法:

在Drosophila montium谱系物种中利用了孟德尔的颜色二态.
基因型的个体来识别对颜色二态化负责的基因位点.
操纵发育温度以评估表型可塑性和主导关系.

主要成果:

POU域动机3 (pdm3) 转录因子位是物种间颜色二态化的基础.
统治关系的跨物种差异是由表型可塑性的变化驱动的.
在光占主导地位的物种中,光明等位基因的支配性随着温度的增加而增加,而黑暗等位基因的支配性在温度上是一致的.

结论:

在等位基主导和表型可塑性之间存在机械联系.
这种联系可能源于发育系统中的类似值的特性.
发育可塑性为主导关系的演变提供了一种机制.

关键词:

多虫的颜色是多虫的颜色.代基优势的优势性发展值的发展值.基因型-表型映射的映射现型性可塑性现型性可塑性性别有限的多态性.

更多相关视频

Daily Transfers, Archiving Populations, and Measuring Fitness in the Long-Term Evolution Experiment with Escherichia coli

Daily Transfers, Archiving Populations, and Measuring Fitness in the Long-Term Evolution Experiment with Escherichia coli

Published on: August 18, 2023

Assessing Social Dominance in Mouse Models Using the Tube Test

Assessing Social Dominance in Mouse Models Using the Tube Test

Published on: June 6, 2025

相关概念视频

Inheritance

Inheritance

Gregor Mendel's pioneering work on the principles of inheritance fundamentally transformed our understanding of how traits are transmitted from generation to generation. His experiments with pea plants laid the groundwork for the discovery of genes, discrete units within organisms that control heredity.
Each gene exists in pairs, and the combination of these genes from both parents forms an individual's genotype. This genotype is a blueprint of potential traits. Examples of genotype...

Incomplete Dominance

Incomplete Dominance

Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.

Background and Environment Affect Phenotype

Background and Environment Affect Phenotype

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...

Law of Segregation

Law of Segregation

When crossing pea plants, Mendel noticed that one of the parental traits would sometimes disappear in the first generation of offspring, called the F1 generation, and could reappear in the next generation (F2). He concluded that one of the traits must be dominant over the other, thereby causing masking of one trait in the F1 generation. When he crossed the F1 plants, he found that 75% of the offspring in the F2 generation had the dominant phenotype, while 25% had the recessive phenotype.

Natural Selection and Adaptation

Natural Selection and Adaptation

Natural selection, a fundamental concept in evolutionary biology, is the mechanism by which evolution is driven, favoring organisms that are best adapted to their environments. This process enhances their chances of survival and reproduction. Adaptation, a key outcome of this process, involves genetic modifications that optimize an organism's functionality under specific environmental challenges, such as extreme cold or thinner air at high altitudes.
Beyond physical adaptations,...

Types of Selection

Types of Selection

Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...