posted by Jake .
A question in Campbell's 8th edition study guide for AP Biology says:
A multifactorial disorder _.
Answer: has a collection of symptoms traceable to an epistatic gene.
There is another answer choice which says : has both genetic and environmental causes.
Shouldn't the answer be the latter? It says the definition of multifactorial is a combination of genetic and environmental factors affect phenotype.
Please try some of the following links on that disorder:
So is there an error in the book?