Genetic and environmental effects were estimated for six serum lipid and lipoprotein variables (total lipids, cholesterol, triglyceride, and lipoproteins Β, pre- Β and Α) in 105 Brazilian twin pairs of both sexes, by path analysis, after adjustment for sex and age influences. Clear indications of important genetic mechanisms affecting the studied variables as well as consistently small environmental effects support recent studies on these quantitative traits.
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Colletto et al. (1981) studied this question.
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