Median-joining network of haplotypes.

<p>The size of a circle is proportional to the frequency of a haplotype in the total sample. The pie charts correspond to the frequency of the given haplotype in particular populations: <i>Farm1</i>—dark green; <i>Farm2</i>—light green; <i>Farm3</i>—brown; <i>Wild1</i>—pink; <i>Wild2</i>—orange. CH1–CH12 indicate nucleotide substitutions, differing haplotypes.