Unnecessary irreducible complexity

From EvoWiki

Examples

• See PZ Myer's post on bricolage and the nanos-hunchback system in the posteriors of Drosophila embryos.
• Unnecessary RNA editing. See odd biochemical pathways and example 6 in: Behrman EJ, Marzluf GA, Bentley R (2004). "Evidence from Biochemical Pathways in Favor of Unfinished Evolution rather than Intelligent Design." Journal of Chemical Education. 81(7):1051-1052. Abstract -- Discussed by PZ Myers here.