Posted: Dec 12, 2014 1:50 pm
1. The rotation of light. When light passes through certain organic molecules, it is rotated to the left (levo) or to the right (dextro).
When these compounds are formed in a laboratory there is an equal mixture of levo and dextro molecules. In a livinf cell all the molecules are levo. How could these have been formed by chance chemical reactions?
An example of random selection during abiogenesis, in that the advantage goes to the first self-replicating molecule, which happened to be levo. The dextros lost, simply by virtue of being too late (by chance).
2. There is a valve (mitral valve) between the left and right auricles in the heart and in the foetus this valve is open so that the blood bypasses the ventricles and the lungs. At the moment of birth this valve must close so that blood flows through the ventricles and the lungs. How did this happen - by chance or designed?
It happened by a process of evolution of embryogenesis, which would have involved co-evolution of the parts of the embryo. Those organisms with poor embryogenesis are deselected - they don't survive.