[js1138]

Please give a reason, either theoretical or experimental, why these kinds of changes cannot happen in concert.

Google Lamark, Lysenko, "midwife toad".

[johnnyb_61820]

Would you like experimental evidence of Lamarckian inheritance? See "Transposable elements as activators of cryptic genes in E. coli.":

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=10952211&query_hl=1

The genome is become more and more Lamarckian each day. If that is your main objection, your biology is behind the times.