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Browsing By Tag "organs"

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[What follows is an nineteenth-century defense of Lamarckism, the since-disproven belief that genetics are molded by the activity or behavior of the organism, instead of through the process of natural selection. Naturally, anyone should be cautious when reviewing a scientific article written more than a hundred year ago, but at least here below, you can see what passionate turns the debate took. In Kropotkin's favor, it may at least be said that the process of natural selection turned out to be far more complicated than Darwin and Wallace had believed, and was only fully elaborated by Dawkins as gene-centric, rather than organism or species-centric. -- Andy Carloff] There can be no doubt that species may become greatly modified through the ... (From : Anarchy Archives.)

Our Synthetic Environment Murray Bookchin CHAPTER FIVE: ENVIRONMENT AND CANCER The Importance of Environment One of the most challenging problems in public health involves the influence of man's environment on the incidence of cancer. Differences of opinion concerning the extent of this influence are likely to have important practical consequences. If a specialist believes that cancer is caused primarily by genetic factors or by the aging process, his hopes for controlling the disease will focus on advances in surgery, radiology, and chemical therapy. He will tend to regard the occurrence of the disease as inevitable. On the other hand, if he strongly suspects that environmental factors play a major role, he is likely to attach a great deal of importance to cancer prevention. He will regard environmental change as a serious problem requiring careful investigation. Nothing can be done to arrest the aging process or alter the indiv...

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