Abstract of Dowling, T.E., G.R. Smith, and W.M. Brown. 1989. Reproductive isolation and introgression between Notropis cornutus and Notropis chrysocephalus (Family Cyprinidae): Comparison of morphology, allozymes, and mitochondrial DNA. Evolution 43(3):620-634.

  • Replicate natural populations of these two minnows show different character combinations in different environments. Morphology, allozymes, and mtDNA segregation is completely uncorrelated.