Height is a polygenic trait. These students in a genetics class lined up, with shorter individuals on the left of the photo and taller individuals on the right, display a classic bell-shaped distribution. © McGraw-Hill Education/Photo by David Hyde and Wayne Falda

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Height is a polygenic trait. These students in a genetics class lined up, with shorter individuals on the left of the photo
and taller individuals on the right, display a classic bell-shaped distribution. © McGraw-Hill Education/Photo by David Hyde and Wayne Falda
Transcribed Image Text:Height is a polygenic trait. These students in a genetics class lined up, with shorter individuals on the left of the photo and taller individuals on the right, display a classic bell-shaped distribution. © McGraw-Hill Education/Photo by David Hyde and Wayne Falda
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The polygenic trait is an exception to Mendel's rule. In this condition, a trait is controlled by more than one gene. This type of expression is shown when a character has many variations like human height have multiple variations.  Human height expression is controlled by 3 genes having 6 alleles. 

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