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jeremy.l32 jeremy.l32
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6 years ago
Some traits are polygenic but do not show typical continuous distributions. For example, type II diabetes is determined by a number of genes, but one is either diagnosed as diabetic or not diabetic based on blood sugar levels.
 
  How might one explain such a phenomenon?
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Essentials of Genetics

Essentials of Genetics


Edition: 9th
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6 years ago
In some cases, a physiological threshold may be crossed such that in the presence of a given proportion of related genes expression occurs. Often, the environment plays a role in expression and therefore, along with genetic makeup, diagnosis of the condition.
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