Pierre-Paul Grassé stated the following: "Some contemporary biologists, as soon as they observe a mutation, talk about evolution. They are implicitly supporting the following syllogism: mutations are the only evolutionary variations, all living beings undergo mutations, therefore all living beings evolve....No matter how numerous they may be, mutations do not produce any kind of evolution." Grasse pointed out that bacteria which are the subject of study of many geneticists and molecular biologists and are organisms which produce the most mutants are considered to have "stabilized a billion years ago!". Grassé regards the "unceasing mutations" to be "merely hereditary fluctuations around a median position; a swing to the right, a swing to the left, but no final evolutionary effect."
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| - Pierre-Paul Grassé stated the following: "Some contemporary biologists, as soon as they observe a mutation, talk about evolution. They are implicitly supporting the following syllogism: mutations are the only evolutionary variations, all living beings undergo mutations, therefore all living beings evolve....No matter how numerous they may be, mutations do not produce any kind of evolution." Grasse pointed out that bacteria which are the subject of study of many geneticists and molecular biologists and are organisms which produce the most mutants are considered to have "stabilized a billion years ago!". Grassé regards the "unceasing mutations" to be "merely hereditary fluctuations around a median position; a swing to the right, a swing to the left, but no final evolutionary effect."
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| - Pierre-Paul Grassé stated the following: "Some contemporary biologists, as soon as they observe a mutation, talk about evolution. They are implicitly supporting the following syllogism: mutations are the only evolutionary variations, all living beings undergo mutations, therefore all living beings evolve....No matter how numerous they may be, mutations do not produce any kind of evolution." Grasse pointed out that bacteria which are the subject of study of many geneticists and molecular biologists and are organisms which produce the most mutants are considered to have "stabilized a billion years ago!". Grassé regards the "unceasing mutations" to be "merely hereditary fluctuations around a median position; a swing to the right, a swing to the left, but no final evolutionary effect." Pierre-Paul Grassé also wrote the following: Theodosius Dobzhansky wrote regarding Pierre-Paul Grassé:
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