Natural Selection Projects
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Principle #1 Genetic Variation: The polar bears in the Arctic have different layers of skin like Thick skin, Thin Skin and Medium skin.
Principle #2 Different Survival & Reproduction: Only 2 cubs are produced and only 1 survives. Only the bears with thick and medium fur will survive when it get cold.
Principle #3 Different Survival & reproduction: Bears with thick and medium coats are the ones surviving more.
Principle #4 Changes in the gene pool: More of the population you will be seeing is thick skin bears and medium skin bears.
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