And Together Tellegen, Lykken, Bouchard, Wilcox, Segal, Rich American Psychological Association Inc. 1988. Repringed from The Journal Of Personality And Social Psycology. Copyright American Psychological Society. By studying identical and fraternal twins and their. Single Gene Disorders.
Schizophrenia appears to have a genetic component and seems to run in families.
Examples of single-gene. Discordance for sexual orientation in.