Beneficial mutations lead to evolution Natural selection is the driving force behind evolution Evolution Mutation Natural Selection Mutations occur in the DNA Natural selection leads to speciation Natural selection is governed by interaction with the environment Genetic Heredity DNA on Chromosomes This is the result of DNA, Genes & reproduction and effects all other ideas in this map The accumulation of traits causes speciation Genes are composed of DNA Genes and Alleles Only certain traits are passed on in our genes Heritability is the result of genes being copied during reproduction Sexual & Asexual Reproduction Heritable and non-heritable characteristics Speciation Environment causes speciation Characteristics are modified by the environment Reproductive capability is determined by adaptation to the environment Interaction with the Environment