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Showing posts with the label theory of evolution

WHEN SIMPLE IS NOT SO SIMPLE

The theory of chemical evolution proposes that life on earth developed by spontaneous chemical reaction billions of years ago. This theory is not that an accident directly transformed lifeless matter into birds, reptiles, or other complex life-forms. Rather, the claim is that a series of spontaneous chemical reactions eventually resulted in very simple life-forms such as algae and other singled-celled organisms. Based on what is now known about these single-celled organisms, is it reasonable to assume that they are so simple that they could have appeared spontaneously? For example, how simple are single-celled algae? Let’s examine one type in particular, the unicellular green algae of the genus Dunaliella of the order Volvocales. The single-celled Dunaliella cells are ovoid, or egg-shaped, and very small –about ten microns long. Placed end to end, it would take about 1,000 of them to make one centimeter. Each cell has two whip-like flagella at one end, which all