TABLE 6.2 Concordance of monozygotic and dizygotic twins for several traits Concordance (%) Trait Monozygotic Dizygotic 1. Heart attack (males) 39 26 2. Heart attack (females) 44 14 3. Bronchial asthma 47 24 4. Cancer (all sites) 12 15 5. Epilepsy 59 19 6. Death from acute infection 7.9 8.8 7. Rheumatoid arthritis 32 6 8. Multiple sclerosis 28

TABLE 6.2 Concordance of monozygotic and dizygotic twins for several traits Concordance (%) Trait Monozygotic Dizygotic 1. Heart attack (males) 39 26 2. Heart attack (females) 44 14 3. Bronchial asthma 47 24 4. Cancer (all sites) 12 15 5. Epilepsy 59 19 6. Death from acute infection 7.9 8.8 7. Rheumatoid arthritis 32 6 8. Multiple sclerosis 28

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter18: Genetics Of Behavior

Section: Chapter Questions

Problem 14QP: A pedigree analysis was performed on the family of a man with schizophrenia. Based on the known...

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A pedigree analysis was performed on the family of a man with schizophrenia. Based on the known concordance statistics, would his MZ twin be at high risk for the disease? Would the twins risk decrease if he were raised in an environment different from that of his schizophrenic brother?
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