Whales are a pretty amazing example. You have to find where on earth
the transitional species existed in order to look for transitional
species. If you kept looking for passenger pigeons in Asia and Africa
you'd never find any even though there were billions existing in North
America at one time.
We got outstandingly lucky with whales. Continental drift was happening
at the time and India was moving from around Madagascar up into and
crashing into Asia. It turned out that whales were evolving along one
of those coasts. I don't know if it was the Indian island continental
coast or the coast of Asia, but when India smashed into Asia those
sedimentary layers were uplifted. So sea side sediments were preserved
where they would eventually erode and fossils could be found instead of
being buried under millions of years of sediment or eroding away.
Really, we would not have those fossils if whales were not evolving
along one of those coasts and India did not smash into Asia.
>
> Yet people still cling to the "short fuse" model of placental divergence and their preconstructed trees.
Beats me what you are talking about. The molecular evidence indicates
that eutherian mammals had evolved before the dino extinction event and
that multiple eutherian mammalian lineages made it past that event. So
there doesn't seem to be much of a short fuse, just rapid divergence
once the niches were open due to the exit of dinos and species like
icthyasaurs and mosasaurs left open those environments for exploitation.
>
> Creationism doesn't hold up to scientific scrutiny itself, but every once in a while they bring up a good point that needs addressing.
Or you just have to look at the evidence to see if there is any point at
all.
>
> Now could you tell me if a coding protein could help form something like a wing just like it helped form an eye in disparate lineages? How about bone ossification? You seem to be knowledgeable on coding proteins and I'd like to know a little more for my work. or at least determine whether it's a course of study worth undertaking to try and solve the problems with bird evolution.
I just put up a paper that indicates that it wasn't all protein coding
for the evolution of feathers. Some protein genes were duplicated and
altered, but it looks like you can get the same structures using genes
that alligators have, but expressing them differently. I also just put
up a thread on gene expression and we expect around 80% of the genetic
variation that we select for in our progress with agricultural plants
and animals to be regulatory genetic variation. Natural selection has
this same genetic variation to work with. So most of the genetic
variation that is important to selection is not protein coding variation.
Ron Okimoto