My undergraduate degree is in Biochemistry and I was never convinced of evolution though it was practically forced upon me.

I tend to answer the type of argument you describe loosely as follows.

It would take a very large number of small mutations to produce a beneficial new system to a creature. So while it is waiting on the completion of this new system it's waisting resources on it's partially developed system, generation after generation. You should see all these partial non-working systems in existing species. It would be like gathering a small piece of metal each generation and eventually it being the right set of pieces to make a working watch. In the meantime you just have a big pile of non working parts to keep passing along. If one generation actually got the watch working one would think you would still have left over parts. If you look at current species how many "wasted" partial system elements are there? In all my studies they can explain just about everything in the body as being there for a purpose. There just isn't any accumulation of partial systems waiting to evolve to completion within existing species. Things like the appendix that were said to be of no use are now known to be part of a working system, not the remnant of something.

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Kenneth Murphy
M.A.R. Student [Theology & Biblical Languages] - Whitefield Theological Seminary
Covenant of Grace Church - Member
St. Charles, MO