Natural Selection: Over a period of several thousands years the deer mice that live in the sandy soil of Nebraska developed a pale coat that helped them evade predators., Organisms best adapted to their environment survive and reproduce more successfully than those that are less adapted., Bacteria that develop a mutation that allows them to survive an antibiotic will live long enough to reproduce and so spread the 'survival' gene to subsequent generations., The angler fish lives in the deep, dark ocean and produces a light that attracts prey., Populations of lizards that have a certain trait become more numerous after a change in climate., Artificial Selection: The intentional breeding of organisms by humans to produce organisms with desired characteristics., Many varieties of tomaties have been created to be different sizes, colors, tastes, and tolerant to different growing conditions., Farmers allow only sheep that produce the best wool to breed., Alaskan Sled dogs have been bred to be healthy and have endurance to run long distances., The Belgian Blue cattle was created to be extremely muscular, therefore providing lots of beef.,

Natural vs. Artificial selection

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恢復自動保存: ?