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Lamarck's theory, known as Lamarckism, proposed that organisms could pass on traits acquired during their lifetime to their offspring, a concept often summarized as "inheritance of acquired characteristics." The main problem with this theory is that it lacks genetic basis; traits that are acquired due to environmental changes or behaviors are not typically encoded in an organism's DNA and thus cannot be inherited. Modern genetics, particularly the understanding of DNA and Mendelian inheritance, has shown that evolution primarily occurs through natural selection acting on heritable genetic variations, not through the inheritance of traits acquired during an organism's lifetime.
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Was lamarcks idea of acquired traits proven or rejected?
rejected.
What was Lamarcks theory of how things changed over time?
Lamarck's theory, known as Lamarckism, proposed that organisms evolve through the inheritance of acquired characteristics. He suggested that traits developed during an organism's lifetime, such as a giraffe stretching its neck to reach higher leaves, could be passed on to its offspring. This idea emphasized the role of adaptation to the environment in driving evolutionary change. While Lamarck's theory was influential, it has since been largely discredited in favor of Darwinian evolution and natural selection.
Is lamarcks theory accepted today if not why?
Lamarck's theory of inheritance of acquired characteristics is not widely accepted today. Modern genetics and the principles of evolution, particularly Darwinian natural selection, provide a more robust framework for understanding how traits are passed from one generation to the next. Evidence from genetics shows that traits are inherited through genes rather than through acquired characteristics resulting from an organism's lifestyle or environment. As a result, while Lamarck's ideas were historically significant, they have been largely replaced by more accurate scientific explanations.
Which of lamarcks ideas was later found to be incorrect?
The idea of acquired characteristics. For instance. The idea that a blacksmith, who would develop enormous muscles due to his trade, could pass these physical attributes on to his children.
What evidence disproves lamarcks theory of evolution?
Lamarck's theory of evolution posited that organisms could pass on traits acquired during their lifetimes to their offspring, such as a giraffe stretching its neck to reach higher leaves. However, evidence from genetics and the understanding of heredity demonstrates that traits are inherited through genes, not acquired characteristics. For instance, when a giraffe stretches its neck, the changes do not affect its DNA, so the offspring do not inherit a longer neck. Experiments in modern biology, such as those involving selective breeding and genetic mutations, further support the principles of Darwinian evolution over Lamarckian ideas.
How is lamarcks theory of evolution different from theory of evolution?
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Was lamarcks idea of acquired traits proven or rejected?
rejected.
What was the problem with the Continental drift theory?
The fundamental problem with Wegner's theory was that he couldn't explain a mechanism for the movement of plates.
Why was Lamarcks theory disproved?
Weismann started an experiment, where he cut off tails on many mice, and let them live like that. When they had offspring, their offspring had tails, proving that traits that are altered during a life-span, don't get passed on to the next generation
Whose theory stuck between Lamarck and Darwin?
lamarcks theory of natural selection was accepted as they believed in religion and didnt want to believe anything other than god created our planet. darwin believed in evolution and plants and animals develop without the aid of intelegent creater through natural selection. lamarcks believed animals changed to fit there habitat for eample a girrafe reached for tall tree's and eventually grew into tall necks. At this period of time niether lamarck are darwin new about genes and in that so came up with these theories. hope this helps xoxox
Maximin and minimax criteria in game theory?
solve a problem in game theory
What was the major problem with wegners theory of continental drift?
The main problem with Wegners theory of continental drift was that at the time he proposed it he had no real proof.
What are the problems of agency theory to the financial manager?
The problem of agency theory are pricniple and agent.
What is an educated guess about the solution to a problem?
A theory.
What is a educated guess about the solutions to a problem?
A theory.
What later evidence disproved Lamarcks theory of acquired characteristics and supported Darwins theory?
Later evidence from genetics and molecular biology showed that acquired traits are not passed down through generations as proposed by Lamarck, as they do not alter the genetic material. On the other hand, Darwin's theory of natural selection was supported by the discovery of the mechanism of inheritance through genes and DNA, providing a more robust explanation for evolutionary change over time.
What is the clique problem and how does it relate to graph theory?
The clique problem is a computational problem in graph theory where the goal is to find a subset of vertices in a graph where every pair of vertices is connected by an edge. This subset is called a clique. In graph theory, cliques are important because they help us understand the structure and connectivity of a graph. The clique problem is a fundamental problem in graph theory and has applications in various fields such as computer science, social networks, and biology.
