FRAGMENT FROM NATURE continues from last weekend on the theme of genotype to phenotype conversion, or from DNA to observable traits. We have been immersed in the all-powerful theory of genes and destiny, but the truth is rather different. The radical conclusions we are arriving at today were completely unpredictable only 50 years ago. The phenotype is crafted from a combination of genes and the environment, often across diverse species, finding similar solutions in unrelated creatures.