Tuesday, August 10, 2010
Survival of the Fittest or Altruistic Suicide?
The answer is that suicide at the cellular level doesn’t kill the whole organism. Such self destruction serves a range of purposes, from guiding development to keeping cancer at bay. In short, cell death in a multicellular organism can be a good thing.
But if cell suicide in multicellular organisms passes the evolutionary test, what about recent findings of suicide in unicellular organisms? New genome data from the Great Barrier Reef demosponge (Amphimedon queenslandica) reveals high levels of unexpected complexity, for this lowly sponge has an impressive complement of genes. As one evolutionist put it, “This flies in the face of what we think of early metazoan evolution.”
Another evolutionist asked perhaps an even more telling question. “What I want to know now,” he asked, “is what were all these genes doing prior to the advent of sponge?”
That’s a good question because some of those genes are for programmed suicide. What this sponge genome apparently tells us is that programmed cell death would have to have arisen in single-cell organisms. Suicide at the cellular level did kill the whole organism—and that doesn’t make evolutionary sense.
With evolution what we must believe is that programmed cell death did not arise in multicellular species, but in unicellular species. In other words, an intricate, highly complex, set of tools and signals somehow arose and, rather than leading to enhanced survival as evolution calls for, they led to destruction. Evolutionists will need yet another one of their just-so stories to rationalize this.