The document discusses a graph depicting a linear regression of ser genotypes and dorsal brightness based on Barrett et al. (2019). It suggests that the effect of the ser allele on dorsal brightness is dominant. The text also mentions multiplicative additive recessive influences.

1. Below b a graph showing alinear regression of Ser genotypes and dorsal beightness from Barrett
et at (2019). The effect of the Ser allele ondorsal brightness appears to be dominarat.
meitiplicative abditioe recensive