Genetic correlation
Genetic correlation
Genetic correlation (juh-net-ik kor-uh-lay-shun) is a term used in the field of Genetics to describe the proportion of variance that two traits share due to genetic causes, the correlation between the genetic influences on a trait and the genetic influences on a different trait estimating the degree of pleiotropy or causal overlap.
Etymology
The term "Genetic correlation" is derived from the English words "Genetic", meaning related to genes or heredity, and "Correlation", meaning a mutual relationship or connection between two or more things.
Definition
Genetic correlation is a parameter used in the study of Quantitative genetics. It is defined as the proportion of shared variance between two traits that is due to genetic causes. A genetic correlation of 1 indicates that the genetic influences on one trait are exactly the same as the genetic influences on another trait. A genetic correlation of 0 indicates that the genetic influences on the two traits are entirely independent.
Related Terms
- Quantitative genetics: The study of continuous traits and their underlying mechanisms, including the effect of genes.
- Pleiotropy: The phenomenon of one gene being responsible for or affecting more than one phenotypic trait.
- Genetic variance: The portion of phenotypic variance in a population that is attributed to genetic factors.
- Phenotypic trait: Observable characteristics of an organism that are influenced by genetic and environmental factors.
See Also
External links
- Medical encyclopedia article on Genetic correlation
- Wikipedia's article - Genetic correlation
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