The results of the preliminary analyses of self-reported data on arrests and criminal behaviour from the Vietnam Era Veteran Twin Registry are given below. The subjects for the study were 3226 male...

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Extracted text: The results of the preliminary analyses of self-reported data on arrests and criminal behaviour from the Vietnam Era Veteran Twin Registry are given below. The subjects for the study were 3226 male twin pairs in which both members served in the military during the Vietnam era. Trait Concordance Criminal MZ DZ behaviour Age 15 - 17 After the war 42 27 23 22 a. Only consider the concordance values for monozygotic (MZ) and dizygotic (DZ) twins for criminal behaviour between the ages of 15 and 17. What does the data suggest in terms of the influence of genes and the environment on criminal behaviour within this age group? b. What does the concordance data from after the war suggest about the influence of genes and the environment on criminal behaviour? c. Considering the concordance data from both age 15 – 17 and after the war, what does the data suggest plays the largest role in criminal behaviour? Please give a reason for your answer.