Figure 2

Sketch of how gene flux between different chromosome arrangements is modeled. The lines indicate a standard (black) and an inverted (gray) chromosome in a heterokaryotype. The letters indicate different sites along the chromosomes. The dashed lines indicate the boundaries β₁ and β₂ of the interval I that is moved from one chromosome to the other. The arrows symbolize that genetic material can be copied from one chromosome and inserted into the other (as in gene conversions), or that genetic material can be exchanged between the two chromosomes (as in double crossing-overs).