Evolutionary Views of Jean-Baptiste Lamarck

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Who was Jean-Baptiste Lamarck?
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A French naturalist known for his theory of evolution before Darwin.
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What is Lamarck's theory of inheritance called?
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Inheritance of Acquired Characteristics.
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What does inheritance of acquired characteristics mean?
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It suggests that traits developed during an organism's life can be passed to offspring.
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Lamarck is known for his work on which group of animals?
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Invertebrates, particularly mollusks.
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What was a key example Lamarck used to explain his theory?
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The elongation of a giraffe’s neck for reaching high leaves.
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How did Lamarck think organisms change over time?
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He believed they adapt to their environment by developing new features.
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What year did Lamarck publish his major evolutionary work?
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1809.
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Lamarck was the first to use which term related to biology?
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Biology.
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What is a common misconception about Lamarck's theory?
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That acquired traits can directly change DNA, which is not possible.
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Why were Lamarck’s ideas initially controversial?
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They challenged the belief that species were unchangeable and created as is.
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Which scientist's ideas eventually surpassed Lamarck's theory?
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Charles Darwin's theory of natural selection.
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What did Lamarck believe about organisms' needs?
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He thought organisms change due to their needs and effort to adapt.
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How is Lamarck's theory viewed today?
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His ideas are largely considered incorrect but were important for evolutionary thought.
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What impact did Lamarck's work have on the scientific community?
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It stimulated discussion and further study on evolution and adaptation.
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Which concept did Lamarck introduce that is similar to use and disuse?
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The idea that use strengthens and enlarges organs, while disuse weakens them.
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