Epistasis quiz Flashcards

Polygenic inheritance refers to a single phenotypic trait that is affected by multiple genes.

Polygenic inheritance involves multiple genes affecting one trait, whereas Mendelian genetics typically involves single genes affecting single traits.

Human height is a classic example of a polygenic trait, controlled by well over 180 genes.

The term 'polygenic' means 'many genes,' indicating that multiple genes influence a single trait.

Human height is determined by well over 180 genes.

The root 'poly' means 'many,' and 'genic' refers to genes.

Polygenic inheritance is a non-Mendelian genetic concept discussed in the video.

Polygenic traits are influenced by multiple genes, while Mendel's laws typically describe traits influenced by single genes.

A phenotypic trait refers to a visible characteristic that is influenced by multiple genes in polygenic inheritance.

Polygenic inheritance contributes to the complexity of genetic traits by involving multiple genes, making the traits more variable and intricate.

Pleiotropy will be compared to polygenic inheritance in the next video.

An example of a polygenic trait shown in the video is human height.

The video suggests that the majority of inherited traits are actually polygenic.

The number of genes involved in polygenic traits signifies the complexity and variability of these traits.

The next topic to be discussed after polygenic inheritance is pleiotropy.