Related Experiment Video
Updated: Feb 22, 2026
10:08
Genetic Mapping of Thermotolerance Differences Between Species of Saccharomyces Yeast via Genome-Wide Reciprocal Hemizygosity Analysis
Published on: August 12, 2019
17.7K
Genetic backgrounds and hidden trait complexity in natural populations
Téo Fournier1, Joseph Schacherer1
1Université de Strasbourg, CNRS, GMGM UMR 7156, F-67000 Strasbourg, France.
Current Opinion in Genetics & Development
|September 16, 2017
Summary
Understanding how genetic background influences trait expression is key to biology. This study reviews how genetic interactions and inheritance shape natural phenotypic variation, improving genotype-phenotype predictions.
Area of Science:
- Genetics and Evolutionary Biology
- Quantitative Genetics
- Molecular Biology
Background:
- Natural phenotypic variation is a fundamental biological concept.
- Heritable traits are influenced by complex genetic architectures.
- Predicting phenotype from genotype is challenging due to varying genetic backgrounds.
Purpose of the Study:
- To review recent advances in understanding genetic background effects on phenotypes.
- To discuss how characterizing inheritance and genetic interactions clarifies genotype-phenotype relationships.
- To highlight the importance of genetic background in natural variation.
Main Methods:
- Literature review of studies on genetic background and phenotypic variation.
- Analysis of how genetic variants' effects differ across genetic backgrounds.
- Discussion of inheritance patterns and genetic interactions.
Main Results:
- Genetic background significantly modulates the expressivity of genetic variants.
- Functional variants can exhibit different phenotypic effects in distinct genetic contexts.
- Existing knowledge on genetic components and their phenotypic effects is incomplete.
Conclusions:
- A deeper understanding of genetic background is essential for deciphering genotype-phenotype relationships.
- Characterizing inheritance, expressivity, and genetic interactions is crucial for studying natural variation.
- Improved models are needed to predict phenotypes accurately from genotypes.
Related Concept Videos
01:18Polygenic Traits
69.4K
When more than one gene is responsible for a given phenotype, the trait is considered polygenic. Human height is a polygenic trait. Studies have uncovered hundreds of loci that influence height, and there are believed to be many more. Due to the high number of genes involved, as well as environmental and nutritional factors, height varies significantly within a given population. The distribution of height forms a bell-shaped curve, with relatively few individuals in the population at the...
69.4K
01:25Inheritance
1.7K
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...
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...
1.7K
01:23Behavioral Genetics and Its Designs
1.2K
Behavior genetics explores how genetic inheritance influences human behavior. It focuses on how genes, passed from parents to offspring, contribute to the development of behavioral traits and tendencies. This branch of genetics seeks to understand the complex interplay between inherited genetic factors and environmental influences in shaping our behaviors.
The primary methodologies used in behavior genetics include family studies, twin studies, and adoption studies, each providing unique...
The primary methodologies used in behavior genetics include family studies, twin studies, and adoption studies, each providing unique...
1.2K
01:25What is Population Genetics?
65.1K
A population is composed of members of the same species that simultaneously live and interact in the same area. When individuals in a population breed, they pass down their genes to their offspring. Many of these genes are polymorphic, meaning that they occur in multiple variants. Such variations of a gene are referred to as alleles. The collective set of all the alleles within a population is known as the gene pool.
65.1K
01:06Heritability
688
Heritability is a statistical concept that measures the degree to which genetic differences among individuals contribute to trait variations within a population. It is a fundamental idea in genetics, often prone to misinterpretation. Heritability is expressed as a percentage, reflecting the proportion of variation in a specific trait across a population that can be linked to genetic differences. However, it's important to understand that heritability does not determine how "genetic"...
688
01:49Multiple Allele Traits
38.3K
The Concept of Multiple Allelism
38.3K