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. Author manuscript; available in PMC: 2009 Jun 8.
Published in final edited form as: Behav Genet. 2009 Mar 13;39(3):265–276. doi: 10.1007/s10519-009-9261-4

Figure 1.

Figure 1

Univariate Homogeneity Model. A = additive genetic influences; C = shared environmental influences; T = twin environmental influences; E = nonshared environmental influences; MZ = monozygotic; DZ = dizygotic; sib = nontwin full sibling.