Researchers have found that schizophrenia may be caused by multiple genes,each contributing equally to the behavioral phenotype. This is an example of _____.
A) a polygenic additive model
B) epistasis
C) single gene, dominant trait
D) single gene, recessive trait
E) genome wide association

Question

Quizplus · Accepted Answer

A polygenic additive model suggests that multiple genes contribute equally to the phenotype or trait being studied. This concept is supported by the finding that schizophrenia may be caused by multiple genes rather than a single gene, dominant or recessive trait, or epistasis. Additionally, genome-wide association studies have identified multiple genes associated with schizophrenia, further supporting a polygenic additive model.

Researchers Have Found That Schizophrenia May Be Caused by Multiple