Summary

digraph G { /* You can reproduce this in graphviz as follows*/ /* splines="FALSE";*/ /* entities */ Twin1 [label="Twin1", shape=box] Twin2 [label="Twin2", shape=box] A1 [label="A"] C1 [label="C"] E1 [label="E"] A2 [label="A"] C2 [label="C"] E2 [label="E"]

/*relationships */ A1 -> Twin1 [label="0.84"] C1 -> Twin1 [label="0.04"] E1 -> Twin1 [label="0.11"] A1 -> A2 [dir=both label="1 / 0.5"] C1 -> C2 [dir=both label="1"] A2 -> Twin2 [label="0.84"] C2 -> Twin2 [label="0.04"] E2 -> Twin2 [label="0.11"] /* ranks */ { rank=max; Twin1; Twin2}; /* max is bottom */ { rank=min; A1; C1; E1; A2; C2; E2;}; /* max is bottom */ }

/* Danish male data (one of eight independent multinational cohorts reported in Silventoinen et al (2003) ^[1]

1. ↑ K. Silventoinen, S. Sammalisto, M. Perola, D. I. Boomsma, B. K. Cornes, C. Davis, L. Dunkel, M. De Lange, J. R. Harris, J. V. Hjelmborg, M. Luciano, N. G. Martin, J. Mortensen, L. Nistico, N. L. Pedersen, A. Skytthe, T. D. Spector, M. A. Stazi, G. Willemsen and J. Kaprio. (2003). Heritability of adult body height: a comparative study of twin cohorts in eight countries. Twin Research , 6 , 399-408. 10.1375/136905203770326402

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