To
answer the second question, we removed the polymorphic sites in
the individual cloned coxIII sequences not matched with the 35
sites in the sequences of PCR product direct sequencing from
ZZ24 and HC2, creating individual sequences with polymorphic
sites verified by PCR product direct sequencing. We then
performed hierarchical clustering and estimated the genetic
distances between the cloned sequences. We obtained a dendrogram
similar to that in Figure 4A