THE SELFISH GENE: WHY YOU BEHAVE THE WAY YOU DO
For a long time I have been confused by the terms DNA, Genes, and Chromosomes and what do people mean when they say we have good or bad genes. After reading "The Selfish Gene" by Richard Dawkins (Oxford University Press, 1976), I have a clearer picture. With the help of the graphics enclosed, here is an explanation of what are genes, DNA and chromosomes: Our bodies are made up of thousands of millions of individual cells. Each cell contains your DNA (Deoxyribonucleic acid) – a molecule with a complete set of instructions for making your body. The double-helix DNA is made up of strings of A,T,C,G* nucleotides stringed together in a particular sequence with "A" always pairing with "T" and "C" with "G" *Adenine, Thymine, Cytosine and Guanine. A gene is a particular length of DNA with a particular sequence of A,T,C,G pairing; that has properties which enable it to survive several generations e.g. a Blue eye gene, a Brown eye...