1. Evidence for at Least Two Major Loci Influencing Human Fatness
Ingrid B. Borecki, John Blangero, Treva Rice, Louis Pérusse, Claude Bouchard, D.C. Rao 
The American Journal of Human Genetics 
Volume 63, Issue 3, Pages (September 1998)
DOI: /302006
Copyright © 1998 The American Society of Human Genetics Terms and Conditions

2. Figure 1
Bivariate segregation model, including unmeasured etiologic factors (represented by circles). g = a major locus, G = a multifactorial/polygenic component, and E = a nontransmitted environmental residual. Each of these factors potentially affect the measured phenotypes (represented by squares). Trait 1 is BMI, and trait 2 is FM. Single-headed arrows indicate the assumed direction of causation, and double-headed arrows indicate correlation.
The American Journal of Human Genetics  , DOI: ( /302006)
Copyright © 1998 The American Society of Human Genetics Terms and Conditions

3. Figure 2 Main hypotheses under the bivariate model
The American Journal of Human Genetics  , DOI: ( /302006)
Copyright © 1998 The American Society of Human Genetics Terms and Conditions

4. Figure 3
Bivariate segregation analysis of BMI (trait 1) and FM (trait 2)
The American Journal of Human Genetics  , DOI: ( /302006)
Copyright © 1998 The American Society of Human Genetics Terms and Conditions