Traits, Phenotypes, and Genotypes. To help understand polygenic traits, explanation of traits, phenotypes, and genotypes is necessary. A trait is any feature of an organism, such as eye color.A phenotype is the set of an organism’s physical characteristics. For example, a person’s hair color, skin color, and eye color are all part of their phenotype.
If variety is the spice of life, polygenic inheritance is one genetic mechanism giving us a continuous range of possibilities. In this lesson, learn how a polygenic trait, like height, can be ...
Polygenic traits are those traits that are controlled by more than one gene. Such traits may even be controlled by genes located on entirely different chromosomes. Human height, eye and hair color are examples of polygenic traits. Skin color is another polygenic trait for humans and a variety of other animals.
Polygenic traits are controlled by two or more than two genes (usually by many different genes) at different loci on different chromosomes.These genes are described as polygenes.A polygene refers to a group of genes that when expressed together produce a particular phenotype or trait.
Using a simplified example of a polygenetic trait controlled by only three genes, this becomes easier to visualize. Examples of Polygenic Inheritance Skin Color. The pigment melanin is responsible for dark coloration in the skin and there are at least three genes, which control for human skin color.
What Is a Polygenic Trait & What Are Some Examples of This? In order to properly understand the definition of a polygenic trait, also known as a polygenic inheritance, you should probably have a solid foundation of some basic genetics terms so that it all comes together nicely.
A "polygene” or "multiple gene inheritance" is a member of a group of non-epistatic genes that interact additively to influence a phenotypic trait. The term "monozygous" is usually used to refer to a hypothetical gene as it is often difficult to characterise the effect of an individual gene from the effects of other genes and the environment on a particular phenotype.
About This Quiz & Worksheet. This quiz and worksheet combo quickly gauges your knowledge of characteristics of polygenic traits. You will be quizzed over examples of polygenic inheritance as well ...
Polygenic Traits: Definition & Examples If variety is the spice of life, polygenic inheritance is one genetic mechanism giving us a continuous range of possibilities. In this lesson, learn how a polygenic trait, like height, can be controlled by multiple genes.
Polygenic Traits: Polygenic traits show a continuous variation of the trait in a population. Examples. Multiple Alleles: The ABO blood type of humans is an example of a trait determined by multiple alleles. Polygenic Traits: The kernel color in wheat and corolla length in tobacco are the examples of polygenic traits in plants. The height ...