In chapter 5, we considered the effects of selection acting on a single locus. In this chapter, we shall emphasize qualitative appreciation of these multi-locus effects, rather than quantitative modelling. 510 index page Overview. Selection which favors or disfavors particular haplotypes can influence linkage patterns. Mimicry in Papilio is controlled by more than one genetic locus.
Many organisms mimic other organisms, as an element of protective adaptation.
Mimicry is an interesting subject in its own right. Here Ridley uses mimetic polymorphism , in which one species may have several different morphs, to introduce the concept of Mendelian traits controlled by multiple loci. The first examples involve swallowtail butterflies, genus Papilio . Close to home, both yellow tiger and black morphs of Papilio glaucus are fairly common in southern Illinois. Making it harder for a predator to learn to discriminate between mimic and model.