Evidence obtained from family, twin, and genetic studies of mood disorders tells us that __________.Group of answer choicesthere may be a genetic link to mood disorders, but no conclusive evidence exists.there is near perfect prediction in risk for suicide among family members.genes influence the risk for major depression.a genetic contribution to major depression has not been found.
Question
Evidence obtained from family, twin, and genetic studies of mood disorders tells us that __________.Group of answer choicesthere may be a genetic link to mood disorders, but no conclusive evidence exists.there is near perfect prediction in risk for suicide among family members.genes influence the risk for major depression.a genetic contribution to major depression has not been found.
Solution
The evidence obtained from family, twin, and genetic studies of mood disorders indicates that genes influence the risk for major depression. This is because these studies often show a higher concordance rate for mood disorders among monozygotic (identical) twins compared to dizygotic (fraternal) twins. Additionally, individuals who have a first-degree relative with a mood disorder are at a higher risk of developing the disorder themselves, suggesting a genetic component. However, it's important to note that while genetics play a role, they are not the sole determinant of whether someone will develop a mood disorder. Environmental factors and individual life experiences also significantly contribute to the onset of these disorders.
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