Susan's mother suffered from the flu during her pregnancy with Susan. Statistically, this increases Susan's risk of later developing schizophrenia. Maternal influenza is an example of a(n) factor because it may influence the expression of a genetic predisposition to schizophrenia.

Anemia, obesity, and asthma can be identified as independent risk factors for influenza A virus infection during pregnancy.

Explanation:

Maternal influenza infection causes maofd behavioral and pharmacological changes in the offspring. ... Maternal viral infection is known to increase the risk of schizophrenia and autism in the offspring.

“In pregnancy, there are changes in the immune system, heart, and lung function that make pregnant women more prone to severe illness from the flu, which can lead to hospitalization or even death,” she says, adding that other complications as a result of the flu include dehydration, miscarriage, and preterm labor.

Maternal influenza is an example of a environmental factor because it may influence the expression of a genetic predisposition to schizophrenia.

Explanation:

Alterations of 5-HT2A and mGlu2 Receptors by taking the medications that may induce psychosis and other symptoms. These medication may also lead to the development of schizophrenia later in the life of an adylt offspring due to these specific alterations.