Lamarck would have said that the ancestors of
modern-day giraffes had short necks but stretched
their necks as they tried to reach leaves in trees; so,
their descendants were born with longer necks.
Darwin would have said that in a population of
ancestral giraffes, some had slightly longer necks
than others; the long-necked giraffes were better
able to feed on tree leaves and as a result produced
more offspring. Over time, the proportion of longnecked
giraffes in the population increased.
Jean-Baptiste Lamarck believed that organisms change through a process of adaptation to their environments, which he described as "inheritance of acquired characteristics." He proposed that traits developed or enhanced during an organism's lifetime could be passed on to its offspring. For example, he suggested that giraffes developed longer necks because their ancestors stretched to reach higher leaves, and this trait was then inherited. Lamarck's ideas laid early groundwork for the study of evolution, although they were later superseded by Darwin's theory of natural selection.
Darwin's work is referred to as The Great Synthesis because, to build his theory of evolution, Darwin used ideas from other scientists such as Malthus, Lyell, Lamarck, Mendel, Linnaeus, (and probably a few others that I'm forgetting... that geology guy that talked about gradualism?). Anyway, Darwin stands apart from these men because he managed to compile a ton of evidence supporting his hypotheses, and created a coherent theory! So, it's a "synthesis" because he brought lots of facts and ideas together to make his most famous book, "On the Origin of Species."
Gregor Mendel and Charles Darwin did not develop ideas together. Mendel's work on genetics and inheritance was published in 1866, several years after Darwin had already published his theory of evolution by natural selection in 1859. Their work was largely independent of each other, though their ideas have since been integrated into the modern evolutionary synthesis.
The naturalists whose essays inspired Charles Darwin to publish his own work were Thomas Robert Malthus and Alfred Russel Wallace. Malthus's essay on population growth highlighted the struggle for resources, which influenced Darwin's ideas on natural selection. Wallace independently developed similar theories and sent his manuscript to Darwin, prompting him to publish "On the Origin of Species" in 1859 to establish priority over the ideas they both explored.
The first to attempt to explain the mechanism by which species change was Jean-Baptiste Lamarck in the early 19th century. He proposed the theory of inheritance of acquired characteristics, suggesting that organisms can pass on traits acquired during their lifetime to their offspring. However, his ideas were later challenged and largely replaced by Charles Darwin's theory of natural selection, which provided a more comprehensive explanation of evolutionary processes.
Darwin did not actually meet Lamarck in person. Lamarck's ideas on evolution were published before Darwin's time, and Darwin was familiar with them through his readings. Darwin's theory of natural selection differed from Lamarck's theory of inheritance of acquired characteristics.
Jean-Baptiste Lamarck, a French biologist, proposed the idea of inheritance of acquired characteristics and the concept of transformational evolution. These ideas influenced Darwin's thinking on evolution and adaptation. However, Darwin's theory of natural selection ultimately diverged from Lamarck's ideas.
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Scientists before Darwin, such as Lamarck and Lyell, influenced Darwin's ideas by presenting concepts like geology and the idea of species change over time. Lamarck's theory of acquired characteristics and Lyell's principles of uniformitarianism provided a basis for Darwin to develop his theory of evolution through natural selection. Darwin built upon these ideas by incorporating them into his own theory, which became the foundation of modern evolutionary biology.
Lamarck proposed that traits acquired during one's lifetime could be passed to the next generation.
Darwin's ideas diverged from Lamarck's primarily in their mechanisms of evolution. While Lamarck proposed that traits acquired during an organism's lifetime could be passed on to offspring (the inheritance of acquired characteristics), Darwin introduced the concept of natural selection, where variations that enhance survival and reproduction are more likely to be passed on. Darwin emphasized random genetic variation and the survival of the fittest, whereas Lamarck focused on purposeful adaptations. This fundamental difference laid the groundwork for modern evolutionary biology.
The basic one of evolution. That organisms change over time.
Darwin was influenced by ideas from other scientists such as Lamarck's theory of acquired traits and Malthus's principle of population. These ideas contributed to Darwin's concept of natural selection as the mechanism for evolution. Ultimately, Darwin's observations and synthesis of these ideas led him to develop his theory of evolution by natural selection, which revolutionized the field of biology.
scientist whose ideas about evolution were the same as Darwin's- Wallace geologist who influenced Darwin- Lyell geologist who influenced Darwin- Hutton scientist whose ideas about evolution and adaptation influenced Darwin- Lamarck economist whose ideas about human population influenced Darwin-Malthus
Darwin's ideas diverged from Lamarck's primarily in their explanations of how species evolve. While Lamarck proposed that organisms could inherit traits acquired during their lifetimes (Lamarckism), Darwin introduced the concept of natural selection, where variation within a population leads to differential survival and reproduction. This mechanism emphasizes the role of genetic variation and environmental pressures rather than acquired characteristics. Thus, Darwin's theory provided a more scientifically grounded understanding of evolution based on observable processes.
Alfred Russel Wallace,Charles Darwin built the theory of Evolution.Jean-Baptiste Lamarck's ideas also helped.
Jean-Baptiste Lamarck published his ideas on evolution in 1809 in his work titled "Philosophie Zoologique." In this book, he introduced the concept of inheritance of acquired characteristics, proposing that organisms could pass on traits acquired during their lifetime to their offspring. Lamarck's ideas were among the earliest theories of evolution, predating Charles Darwin's work by several decades.