WebDarwin and Wallace's theory of evolution by natural selection was revolutionary because it ________. dismissed the idea that species are constant and emphasized the importance … WebJun 11, 2024 · Natural selection no longer causes evolution, and can only act as a headsman for the unfit, thus promoting changes that originated in other ways. …

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WebView questions only. See Page 1. 27) Over long periods oftime, many cave-dwelling organisms have lost their eyes. Tapeworms have lost their digestive systems. Whales have lost their hind limbs. WebHow can natural selection account for these losses? A) Natural selection cannot account for losses, only for innovations. B) Natural selection accounts for these losses by the principle of use and disuse. ... The … gas bottle rental prices

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WebA. Humans and bats evolved by natural selection, and whales evolved by Lamarckian mechanisms. B. Forelimb evolution was adaptive in people and bats, but not in whales. C. Natural selection in an aquatic environment resulted in significant changes to whale forelimb anatomy. D. Genes mutate faster in whales than in humans or bats. WebOct 23, 2008 · Once these genes neither enhance nor hinder the organism’s survival, the forces of natural selection that once maintained those genes in good working order no longer operate (Nei 2005). The genes are then free to accumulate mutations which can impair their function(s), and the unnecessary structures may degenerate. WebNatural selection is a mechanism of evolution. Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success. … dave ward channel 13 houston