Polygenic trait inheritance

A polygenic trait is a characteristic, such as height or skin color, that is influenced by two or more genes. Because multiple genes are involved, polygenic traits do not follow the patterns of Mendelian inheritance. Many polygenic traits are also influenced by the environment and are called multifactorial. Problem: Two plants with white flowers, each from true-breeding strains, were crossed. All the F1 plants had red flowers. When these F1 plants were intercrossed, they produced an F2 consisting of 177 plants with red flowers and 142 plants with white flowers. (a) Assuming two independently assorting genes dictate flower color. Given the data above, provide an explanation for the inheritance of flower color in this plant species. (b) Propose a biochemical pathway for flower pigmentation and indicate which genes control which steps of the pathway. #QuantitativeTraitLocus #PolygenicInheritance #polygenicInheritanceExample #whatIsPolygenicInheritance #normalDistributionCurve #incompletelyDominantTraits #additiveEffect #Genetics #exampleOfPolygenicInheritance #skinColorTrait #skinColorTraitInHumans #skinColorInheritance #heightInhertiance #heightTraitInheritance #polygene #polygeneAndAdditiveEffect #NikolaysGeneticsLessons #PunnettSquares #codominance #epistasis #incompleteDominance #polygenic