| rapd marker estimation of genetic structure among isolated northern leopard frog populations in the south-western usa. | amphibians in the south-western united states are currently experiencing population declines. causal explanations for these population changes as well as the implementation of sound management practices requires an understanding of the genetic structure of natural amphibian populations. to this end, we estimated genetic differences within and among seven isolated populations of northern leopard frogs, rana pipiens, from arizona and southern utah using random amplified polymorphic dna (rapd) anal ... | 1996 | 8794561 |