Which of the following terms refers to the situation where a single phenotypic characteristic is determined by

the additive effects of two or more genes?





a. blending inheritance


b. incomplete dominance


c. pleiotropy


d. codominance


e. polygenic inheritance

Which of the following terms refers to the situation where a single phenotypic characteristic is determined by
The correct answer would be E. Polygenic inheritance, also known as quantitative or multifactorial, refers to inheritance of a Phenotypic characteristic. A trait that is attributable to two or more genes and their interaction with the environment. Unlike Monogenic traits, polygenic traits, do not follow patterns of Mendelian Inheritance ( qualitative traits) instead, their phenotypes typically vary along a continuous gradient depicted by a curve bell. For example; Polygenic trait is human skin color. I hope that this is useful. Here's a web:


http://en.wikipedia.org/wiki/Polygenic_i...
Reply:b
Reply:e. polygenic inheritance





From http://library.thinkquest.org/28751/revi...





"In polygenic inheritance there is more than one gene responsible for a trait. This usually results in continuous variation. In humans, for example, height is a result of the involvement of more than one gene."

online survey