(Note: the groups in this figure are arranged along made-up “scala naturae” to emphasize the lack of relationship between genome size and intuitive notions of organismal complexity — please do not construe this figure as an endorsement of a progressionist view of evolution!).
The chart above and note are from genomesize.com
As the note says, the bars in the chart indicate ranges of genome size. The measurements are given as a C-value, which here is a measure of weight in picograms. As we can see, genome size and complexity do not go hand in hand. Salamanders, flatworms, and algae are just a few of the groups which have members with genomes sizes larger than that of the mammals. Et tu, Chondrichthyes? Members of the protozoa have the largest. Isn’t it bad enough that humans have to deal with penis envy, now this? If there is a creator, he has an “inordinate fondness” for amoebae. All that sexy amoebic swaying and oozing is what did it. It’s a damn popularity contest. The swimsuit contest lost us the most points; the amoeba slipped out of its top, showed some membrane, and won the day.