You are correct. It is to 5 different genes but I do not know how many
base-pairs are altered nor do I know how big the genes are. Newspaper
accounts do not give such info. I am doing a search on Doebley
There is a similar case with Monkeyflowers. 8 genes seem to be involved
in this one.
See ~H.D. Bradshaw Jr., S. M. Wilbert, K. G. Otto and D. W. Schemske,
"Genetic mapping of Floral Traits Associated with Reproductive isolation
in monkeyflowers (Mimulus)," Nature, 376 Aug. 31, 1995, p. 762-765
The often cited view Christian apologists give of the effects of mutation
is that there needs to be millions of them in order to change from one
species to another. This is wrong. Mutations to particular places on the
DNA alter the morphology drastically without killing the individual or
harming him badly enough to cause him not to be able to compete.
glenn
Foundation,Fall and Flood
http://members.gnn.com/GRMorton/dmd.htm