Quantitative genetics
（重定向自Polygenic trait）
![Analysis of Sexual reproduction.](/Images/godic/202502/03/Sexual-Repro-simpl3115.jpg")
![Population mean across all values of p, for various d effects.](/Images/godic/202502/03/G_mean3115.jpg")
![Genetic Drift example analysis.](/Images/godic/202502/03/Genetic_Drift_example_B33115.jpg")
![Inbreeding resulting from Genetic drift in Random fertilization .](/Images/godic/202502/03/RF_Inbreeding3116.jpg")
Quantitative genetics is a branch of population genetics that deals with phenotypes that vary continuously (in characters such as height or mass)—as opposed to discretely identifiable phenotypes and gene-products (such as eye-colour, or the presence of a particular biochemical).