Expressivity is defined as a term used in genetics to describe the degree to which an individual exhibits a trait or a genetic mutation.
(noun)When a genetic defect can cause either mild learning disabilities or extreme learning disabilities, the degree to which a person suffers from learning disabilities is an example of the expressivity of the genetic defect.
See expressivity in Webster's New World College Dictionary
noun
See expressivity in American Heritage Dictionary 4
noun pl. ex·pres·siv·i·ties
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