Correlations between risk of developing schizophrenia and the degree of relatedness among relatives GENES SHARED eral popul 125%(1/8) first cousins 3rd degree relatives uncles/aunts nephews/ nieces ■25%(1/4 2nd degree relatives grandchildren half siblings 50%(1/2) nst degree relatives arents children fraternal twi identical twins 10 RELATIONSHIP TO PERSON RISK OF DEVELOPING SCHIZOPHRENIA WITH SCHIZOPHRENIA(1/2) (1/4) (1/8) Correlations between risk of developing schizophrenia and the degree of relatedness among relatives