Figure 1
From: Inferring causal phenotype networks using structural equation models
Some possible gene-phenotype networks involving a single gene ( g ) and two phenotypic traits ( y 1 and y 2 ). Standard multi-trait statistical models could potentially detect a correlation between the two phenotypic traits and a pleiotropic effect of gene g; however, only gene-phenotype network and causal models would be able to distinguish the paths connecting them