Last week, we listened to Chapter 3 on Genetics. We looked at how replicators like DNA work, so that we can understand how organisms like us may have grown and evolved from the original replicator. I took you through what DNA, Chromosomes, Cells and Genes are. We learnt that chemicals in our bodies make up a genetic code, like letters making up alphabets. We learnt how this code is passed on from parents to children through DNA molecules that make up genes through sexual and asexual reproduction. I concluded the chapter by saying that even though genes, in their physical form, do not last forever, the information they contain is passed on inside living organisms for millions of years. In a sense, therefore, genes have the potential to be immortal and live on forever. The next thing we need to look into is how organisms including plants and animals evolve. So here now, for you, this Sunday 1st of September 2013, Chapter 4 of The Tyranny of God: Evolution By Natural Selection.