Intelligent Design

Early Vision More Complicated

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As you read these words a frenzy of activity is taking place as the light entering your eye triggers a dizzying sequence of actions, ultimately causing a signal to be sent to your brain. In fact, even a mere single photon can be detected in your vision system. It all starts with a photon interacting with a light-sensitive chromophore molecule. The interaction causes the chromophore to change configuration and this, in turn, influences the large, trans-membrane rhodopsin protein to which the chromophore is attached. This is just the beginning of the cellular signal transduction cascade.  Read more

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