Polygenic definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Look it up now!
polygenic: [ pol″e-jēn´ik ] pertaining to or determined by several different genes.
A polygenic trait is one whose phenotype is influenced by more than one gene. Traits that display a continuous distribution, such as height or skin color, are polygenic. The inheritance of polygenic traits does not show the phenotypic ratios characteristic of Mendelian inheritance, though each of the genes contributing to the trait is inherited ...
Last month we announced that the MyHeritage DNA Health test includes a fourth polygenic risk report for high blood pressure in addition to its initial 3 polygenic risk reports for type 2 diabetes, heart disease, and female breast cancer. In the first Health Basics post, we explored what a polygenic risk score actually is.In this post, we’ll dig further into what they mean and how they can be ...
Polygenic inheritance definition: the heredity of complex characters that are determined by a large number of genes , each... | Meaning, pronunciation, translations and examples
‘Monogenic and polygenic inheritance of adult resistance under controlled and field conditions has been reported in the literature.’ ‘In the Belgian tervuren and sheepdog, epilepsy is highly heritable with a polygenic mode of inheritance, though apparently influenced by a single autosomal recessive locus of large effect.’
pol·y·gen·ic (pŏl′ē-jĕn′ĭk) adj. 1. Of, relating to, or determined by polygenes: polygenic inheritance. 2. a. Of or relating to polygenesis; polygenetic. b. Of or relating to polygenism. pol′y·gen′i·cal·ly adv. polygenic (ˌpɒliˈdʒɛnik) adj (Genetics) of, relating to, or controlled by polygenes: polygenic inheritance ...
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.
Polygenic Inheritance Definition. Polygenic inheritance, also known as quantitative inheritance, refers to a single inherited phenotypic trait that is controlled by two or more different genes.. In a system which differs from Mendelian Genetics, where monogenic traits are determined by the different alleles of a single gene, polygenetic traits may display a range of possible phenotypes ...
Polygenic traits also have dominant and recessive alleles, but so many genes play a role in an organism’s phenotype for these traits that the final result is the sum of many complex interactions. It can be hard or impossible to figure out one gene’s effect on a polygenic trait.