Which of the following statements is TRUE? A) Overwhelming evidence suggests mood disorders are familial and reflect an underlying genetic vulnerability. B) Studies are now beginning to identify a small group of genes that may contribute to genetic vulnerability to ^som^e^type^s^o^f^depression. C) The genetic contribution to depression falls in the range of approximately 40% for females and 20% for males. D) All of the above

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All three statements are true. A) Evidence suggests that mood disorders have a familial and genetic component. B) Studies have identified a small group of genes involved in depression susceptibility. C) The genetic contribution to depression varies by gender, with females showing a higher genetic contribution than males.

Which of the Following Statements Is TRUE