Levels of expression of the foraging gene (for;
Expression) in two worker types (type) in
three bee colonies (colony). Note that
colony is not coded as a factor.
Arguments
source
Ben-Shahar, Y., A. Robichon, M.B. Sokolowski, and G.E.
Robinson. 2002. Influence of gene action across different
time scales on behavior. Science 296: 741-744.