A 32-yrs-old woman is diagnosed with major depression. What is the chance that her identical twin sister will develop the same disease? (NOT RELATED TO PHARMACOLOGY)
5%
25%
50%
75%
The concordance rate for mood disorders (Mania) in monozygotic twins averages 70% and for depression it is 50% when various studies are combined. The concordance rate in dizygotic twins is approximately 20%.
All India exam