Table 3.

Matching symbols in the two models

Notation in cultural transmission model	Corresponding representation in the unified causal model
$c_1$	$P\left(X_{ch}=1|G_{ch}=A_1{A}_1,X_{pa}=\left(\mathrm{0,0}\right)\right)$
$c_1+e_1$	$P\left(X_{ch}=1|G_{ch}=A_1{A}_1,X_{pa}=\left(\mathrm{1,0}\right)\hspace{0.17em}\mathrm{o}\mathrm{r}\hspace{0.17em}\left(\mathrm{0,1}\right)\right)$
$c_1+2e_1$	$P\left(X_{ch}=1|G_{ch}=A_1{A}_1,X_{pa}=\left(\mathrm{1,1}\right)\right)$
$c_2$	$P\left(X_{ch}=1|G_{ch}=A_1{A}_2,X_{pa}=\left(\mathrm{0,0}\right)\right)$
$c_2+e_2$	$P\left(X_{ch}=1|G_{ch}=A_1{A}_2,X_{pa}=\left(\mathrm{1,0}\right)\hspace{0.17em}\mathrm{o}\mathrm{r}\hspace{0.17em}\left(\mathrm{0,1}\right)\right)$
$c_2+2e_2$	$P\left(X_{ch}=1|G_{ch}=A_1{A}_2,X_{pa}=\left(\mathrm{1,1}\right)\right)$
$c_3$	$P\left(X_{ch}=1|G_{ch}=A_2{A}_2,X_{pa}=\left(\mathrm{0,0}\right)\right)$
$c_3+e_3$	$P\left(X_{ch}=1|G_{ch}=A_2{A}_2,X_{pa}=\left(\mathrm{1,0}\right)\hspace{0.17em}\mathrm{o}\mathrm{r}\hspace{0.17em}\left(\mathrm{0,1}\right)\right)$
$c_3+2e_3$	$P\left(X_{ch}=1|G_{ch}=A_2{A}_2,X_{pa}=\left(\mathrm{1,1}\right)\right)$

Here for simplicity, we assume X =1 for bar phenotype and X =0 for nonbar phenotype.