Compare and contrast Lamarck’s scientifically invalid model of evolution (Lamarckian Inheritance) with Darwin’s scientifically valid model of evolution by Natural Selection. Though incorrect, why was Lamarck’s theory of mutability so revolutionary compared to other scientific thinkers of the time and preceding him? Why was Darwin’s (and technically Alfred Wallace’s) theories of mutability so revolutionary compared to Lamarck’s? What aspects of natural selection did Lamarck get right? What aspects did Lamarck get totally wrong? Remember to consider and give examples of mechanisms of inheritance on both the individual

Compare and contrast Lamarck’s scientifically invalid model of evolution (Lamarckian Inheritance) with Darwin’s scientifically valid model of evolution by Natural Selection. Though incorrect, why was Lamarck’s theory of mutability so revolutionary compared to other scientific thinkers of the time and preceding him? Why was Darwin’s (and technically Alfred Wallace’s) theories of mutability so revolutionary compared to Lamarck’s? What aspects of natural selection did Lamarck get right? What aspects did Lamarck get totally wrong? Remember to consider and give examples of mechanisms of inheritance on both the individual

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter20: Development Of Evolutionary Thinking

Section20.2: Darwin’s Journeys

Problem 1SB: What observations that Darwin made on his round-the-world voyage influenced his later thoughts about...

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Darwin was the first person to note that evolutionary outcomes are probabilistic, meaning that they depend on the likelihood of outcomes rather than on certainties. Explain what this means in the context of Darwin’s theory of how evolution occurs? That is, how is Darwin’s theory is dependent upon the chances of a certain outcome and not on the absolute certainty of any particular outcome?
What observations that Darwin made on his round-the-world voyage influenced his later thoughts about evolution?
Among all the Theories of Lamarck and Darwin, which one is the most sensible? Explain why.
One of the lines of evidence that led Darwin to the theory of natural selection was his study of artificial selection. Plant breeders and pigeon breeders select offspring with specific traits in mind beforehand. a) However, since humans are an integral part of the natural world, do you think that artificial selection might be more appropriately termed “natural selection”? Why?
Which question below directly corresponds to whether Lamarck or Darwin are correct about their theories of the mechanisms of evolution? A.) Why don’t the shorter neck giraffes feed on grasses and lower vegetation? B.) How would the shorter necked giraffes in Lamarck’s theory survive to reproduce and pass on the “need” for longer necks if they were unable to reach food? C.) Why won’t the taller necked giraffes in Darwin’s theory provide assistance to the shorter giraffes since they are the same species? D.) Will the smaller giraffes be more adapted to hide from predators since they wouldn’t be visible from greater distances?
Darwin was not the first to propose a mechanism for evolution. Lamarck proposed “acquired inheritance” in which individuals inherit those traits acquired in the lifetime of their parents (e.g., long necks). Compare Lamark’s mechanism to Darwin’s mechanism for evolution (descent with modification). As part of your answer describe how each theory is similar to the other and how each is different? Finally, Lamarck’s theory can be easily shown to be unworkable (e.g., amputees don’t have babies that are amputees meaning babies don’t inherit the acquired trait). What makes Darwin’s theory workable when compared to Lamarck’s unworkable theory.
Darwin proposed natural selection as a mechanism for evolution. How is it similar to artificial selection? How is it different?For natural selection to work, there must be genetic variation within a population as well as mutations? Why must there be both?
Using evidence from the text, how did natural selection determine the survival of medeival humans during the black death( bubonic plague)? Please explain in 4 to 4 sentences Use the words: variation, natural selection, favorable traits
Which of the following statements regarding Darwin and his theory of evolution is false?
What was missing in Darwin’s explanation of evolution by natural selection? How does the modern synthesis fill this gap?
While the French biologist LaMarck was correct in proposing that evolution does occur, he believed that the long necks of giraffes evolved as generations of giraffes reached for ever higher leaves on the trees. Using these observations, LaMarck proposed the theory that evolution occurs due to the inheritance of characteristics acquired during an organism’s lifetime. From what you know about the scientific method, why is this incorrect?
Charles Darwin established a theory of evolution based on variation, competition, and survival in the living world by studying careful observations made on a sailing trip around the world. Darwin put forth two main concepts: evolution and natural selection.- Organize your thoughts about Darwin’s ideas of evolution by filling out the concept map below.