Answer:
When one identical twin has a mood disorder, the other twin has a 50% Chance of developing the disorder.
Step-by-step explanation:
It has been studied among the identical twin and fraternal twins about the depression and mood disorder. The study showed that 46% of the other identical twin suffers from depression it they face a traumatic situation in their life if the other have already faced depression while it is only true for the 20% of the Fraternal twins.