article: Speciation
links: Middle East Copulation Charles Darwin Tibetan Plateau Volcanic Richard Dawkins Tropical Himalaya DNA East Africa Drosophila Cretaceous North Pole America Mauna Kea North Africa Hawaiian–Emperor seamount chain Reproductive isolation Norway Alfred Russel Wallace Mediterranean Crataegus Central Valley (California) Algeria Ensatina Caucasus Hotspot (geology) Atlas Mountains Hawaiian Islands Moritz Wagner DNA sequence Polyploidy Natural history Dobzhansky Drosophila melanogaster Drosophila pseudoobscura Germany Ernst Mayr Galapagos Islands