BIOC14H3 Lecture 3: Genes & Environment Lecture 3
Document Summary
Qualitative traits phenotypes fall into qualitatively different categories (cid:523)discrete variables(cid:524) categorical traits. Phenotypes are distributed over a continuous range such as height, skin color, eye color, intelligence, personality. Mendel focused on qualitative traits, but when it comes to human behavior, things are more complicated and traits are on a continuum. When we talk about traits in a continuous range, they often involve the interaction of many genes with small effects rather than involving one gene with large effects. Ald happens in males disorder cytotoxic: affects mostly males because they have to have 2 copies and when the. A classic example is pku happens when there is deficiencies in an enzyme. )t goes from very severe disorders to less severe known that there are over. There are over 400 know mutations of this gene many varieties not: norway (cid:883) in (cid:883)(cid:885),(cid:882)(cid:882)(cid:882) always the same mutation or the same problem.
