Modern Evolutionary Theory - SS3 Biology Lesson Note

Modern evolutionary theory, also known as the synthetic theory of evolution or Neo-Darwinism, is an integrated framework that combines Darwinian natural selection with principles from genetics, molecular biology, and population genetics to explain the patterns and mechanisms of evolution. It recognizes that heritable variations arise from genetic mutations and recombination and can be acted upon by natural selection, genetic drift, gene flow, and other evolutionary forces.

Modern evolutionary theory emphasizes that evolution occurs at multiple levels, from changes in genes within populations to the divergence and speciation of lineages over long periods of time. It also incorporates concepts such as molecular clocks, phylogenetic analysis, and the role of developmental processes in shaping evolutionary change. Overall, modern evolutionary theory provides a comprehensive and evidence-based understanding of how life has evolved and continues to diversify on Earth.