The evolution of organisms is not as simple as the single locus models used to define basic theory. Models that describe two locus evolution, and the correlation among these loci, are more complex.

Demonstrate your understanding of linkage disequilibrium and what increases linkage equilibrium in populations. Describe the relationship between recombination and linkage disequilibrium. Finally, Imagine that you discover linkage disequilibrium, relative to other nearby markers, of a gene that influences the color patterns in a population of butterflies. This level of linkage disequilibrium is higher than observed for other loci. What might this indicate?