Any mutation must be applied to a DNA coding that already exists. It can not be applied to coding that does not exist. Is this a silly statement? Not at all. It leads to the way that evolution changes an organism. Mutations are always applied to the existing DNA coding. Evolution makes something new out of something that already exists. If a bear becomes distressed in a given environment, it does not sprout wings and …
showed first 75 words of 994 total

showed last 75 words of 994 total
…is not quite true. We would not live an hour in his environment. We have reverted to his instincts, that is true, but those instincts are now perverted. Through discipline, man substituted intelligence for instinct over a long period. During that time the instincts suffered mutations. Since both the original instincts and their mutations were being overridden by intelligence, the instinct mutations were not considered detrimental by evolution and so accumulated in the gene pool