If bipolar disorder is genetically linked, then which of the following research findings, if obtained, would be the least likely?
A) Genetic markers on chromosomes are exclusively linked to bipolar disorder.
B) Children of biological parents with bipolar disorder are more likely to have the disorder than children of adoptive parents who have the disorder.
C) A person who has an identical twin with bipolar disorder has a greater risk of developing the disorder compared to a person who has a fraternal twin with the disorder.
D) The rate of bipolar disorder has increased steadily over the past decade.

Question

Quizplus · Accepted Answer

If bipolar disorder is genetically linked, an increase in the rate of the disorder over a decade is less likely to be due to genetic factors, as genetic changes typically occur over much longer periods.

If Bipolar Disorder Is Genetically Linked, Then Which of the Following