Compared with fraternal twins or other siblings, identical twins of persons with a bipolar disorder are _____ likely to develop bipolar disorder.
A) significantly more
B) somewhat more
C) somewhat less
D) significantly less

Question

Quizplus · Accepted Answer

Identical twins share the same genetic makeup, making them significantly more likely to both develop bipolar disorder if one twin has it, compared to fraternal twins or other siblings who share less genetic similarity.

Compared with Fraternal Twins or Other Siblings, Identical Twins of Persons