Wnn System Account (aka Joe Felsenstein) wrote:
> If you're doing phylogenies within a genus of dicky-birds,
> it is a natural thing to test. Does anyone imagine that they would
> have grossly-different rates of molecular evolution? It would be
> strange if they did. Morphology is, of course, a different matter.
Well, if you change "grossly-different" to "different" and "dicky-birds"
to "ducky-birds" (genus Anas), then there would appear to be evidence
for different rates in different lineages, both for molecular and
morphological evolution. See:
Omland, K.E. 1994. Character Congruence Between a Molecular and
a Morphological Phylogeny for Dabbling Ducks (Anas). Syst.
Biol. 43(3): 369-386.
Omland has some more recent work that is more convincing with
respect to correlations of lineage-specific rates between molecular
and morphological evolution, but I don't know whether it has
been published yet.
Department of Biochemistry
Halifax, Nova Scotia B3H 4H7 CANADA
(email) arlin at is.dal.ca