A polygenic trait, is a trait that nonallelic genes control.
If you were to graph out a trait or phenotype that is polygenic, you would notice a trend. These traits have what's called continuous variation, showing a bell curve of values for the phenotype. This is because there are multiple genes that play a role in the phenotype, and each gene could have multiple alleles.  Coat color and pattern is a polygenic trait, meaning it is controlled by more than one gene or gene complex. A dog with the gene for black color expression may also have the gene for suppression of black and so have a red or yellow coat. A polygenic trait is a trait in which multiple sets of alleles are used to determine the trait, whereas in a single gene trait aka. a Mendelian trait, only one pair of alleles … is used. + 26 others found this useful. The term “polygenic inheritance” is used to refer to the inheritance of quantitative traits, traits which are influenced by multiple genes, not just one. In addition to involving multiple genes, polygenic inheritance also looks at the role of environment in someone's development. Polygenic inheritance refers to any trait, such as human skin color, that can be expressed in varying gradients because it is influenced by multiple genes. Early Mendelian genetics focused on simple traits that could be explained by a single gene. Polygenic inheritance occurs when one characteristic is controlled by two or more genes. Often the genes are large in quantity but small in effect. Examples of human polygenic inheritance are height, skin color, eye color and weight. Polygenes exist in other organisms, as well. A polygene, multiple factor, multiple gene inheritance, or quantitative gene is a group of non-epistatic genes that together influence a phenotypic trait. The precise loci or identities of the non-allelic genes are often unknown to biologists. A trait that is controlled by a group of nonallelic genes. Supplement. 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. Examples of human polygenic inheritance are height, skin colour and weight. Polygenes allow a wide range of physical traits. For instance, height is regulated by several genes so that there will be a wide range of heights in a population. Word origin: poly = many + genic = of genes. Report Abuse. A polygenic/complex trait is a trait that is influenced by many different genes. Examples are height, weight, intelligence, skin color. Contrast this to a simple inheritance pattern where one gene determines flower color, for instance.  A polygenic trait, is a trait that nonallelic genes control. These traits result from one or more genes contributing to the phenotype. An individual's physical appearance is determined by chromosomal inheritance and genotypic ratio. This phenomenon is known as Mendel's Laws of Inheritance. Polygenic Trait Aspects. Polygenic trait molding is done mostly with the environment and genes. More than one gene determines these traits, with each gene giving a small, yet additive effect. Multifactorial traits do not exhibit Mendelian ratios, and are determined between genes, or a gene, and the environment. So multiple alleles are more than two alleles for one trait, and polygenic traits are one trait that is influenced by mulitple genes. This information came from my biology textbook, Biology: Principles and Explorations by Holt, Rinehart, and Winston. Mendelian traits are influences by a single gene. Polygenic traits are influenced by multiple genes. + 1 other found this useful. Riny Jacob. Edit. Share to: 1  Important Facts About Pleiotropy Science has been involved in studying genes for quite some time. Polygenic traits are [characteristics of organisms that are] …  influenced by several genes.    So multiple alleles are more than two alleles for one trait, and  polygenic traits are one trait that is influenced by mulitple  genes. Mendelian traits are influences by a single gene. Polygenic traits are influenced by multiple genes. + 1 other found this useful. Riny Jacob. Edit. Share to: 1  Important Facts About Pleiotropy Science has been involved in studying genes for quite some time.
http://study.com/academy/lesson/polygenic-traits-definition-examples.html http://www.answers.com/Q/What_is_an_example_for_polygenic_traits http://www.wisegeek.org/what-is-a-polygenic-inheritance.htm https://en.wikipedia.org/wiki/Polygene http://www.biology-online.org/dictionary/Polygenic_trait https://answers.yahoo.com/question/index?qid=20110409095123AAtSwUS http://www.brighthub.com/science/genetics/articles/80453.aspx http://www.answers.com/Q/What_is_a_polygenic_trait http://www.answers.com/Q/What_is_a_polygenic_trait
what is a polygenic trait