http://digfir-published.macmillanusa.com/hlw/hlw_ch18_1.htmlCHAPTER 18 INTRODUCTION513e8237b11c0fa574000000
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18.1 HEREDITY AND ENVIRONMENT
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18.2 RESEMBLANCE AMONG RELATIVES
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18.3 TWIN STUDIES
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18.4 COMPLEX TRAITS IN HEALTH AND DISEASE
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http://digfir-published.macmillanusa.com/hlw/hlw_ch18_6.htmlCHAPTER SUMMARY513e8237b11c0fa574000000
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