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Why did Darwin think giraffes are a good example of natural selections?
Actually, it was Lamarck who earlier introduced the giraffe as an example for evolution - Lamarckian evolution, to be sure. Lamarck proposed that there was some mechanism by which the short-necked ancestors of giraffes could acquire a change such that their offspring would have necks better suited to their needs. Darwin applied natural selection to the same example mainly because it had already been discussed in such detail.
Why has lamack theory of evolutio been rejected?
Lamarck's theory of evolution has been largely rejected because it proposed that organisms could pass on traits acquired during their lifetime to their offspring, a concept known as inheritance of acquired characteristics. Modern genetics and evolutionary biology, particularly through the work of Charles Darwin and the development of the theory of natural selection, have shown that genetic variation arises through mutations and is inherited through genes, not acquired traits. Additionally, empirical evidence has consistently supported Darwinian evolution over Lamarckian ideas.
What are solutions for endangered animals?
1. There are captive breeding programs in several places that work to preserve and increase the numbers of endangered species and reintroduce them to the wild. Many species are protected in controlled environments such as wildlife preserves. There are several organizations such as World Wildlife Organization that are dedicated to the goal of protecting and preserving these species. We can help endangered species by staying informed and supporting organizations that work to protect these animals. It is also important to mention that animals are not the only endangered species. There are plenty of plant species that are also endangered and their continued existence is important to our ecosystem as well
How long did long necks live on earth?
Long necks go back to the dinosaurs when there were Lamarckian mutations.
What are the specific clues that most clearly distinguish a darwinian explanation from a lamarckian explanation?
A key distinction between Darwinian and Lamarckian explanations is the inheritance of acquired traits: Lamarck proposed that organisms could pass on traits acquired during their lifetime to their offspring, while Darwin's theory of natural selection relies on genetic variation and heritability of selected traits over generations. Additionally, Darwinian evolution emphasizes gradual changes through natural selection acting on variation within populations, whereas Lamarckian evolution suggests that organisms can adapt quickly and purposefully to their environment.
What are the specific clues that most clearly distinguish a Darwinian explanation from a Lamarck explanation?
Darwinian evolution is based on the idea of natural selection, where individuals with advantageous traits are more likely to survive and reproduce, leading to the gradual accumulation of these traits in a population over generations. In contrast, Lamarckian evolution suggests that acquired traits during an individual's lifetime can be passed on to offspring. Specific clues that distinguish these explanations include the basis for inheritance of traits (genetic in Darwinian vs. acquired in Lamarckian) and the mechanism of how populations change over time (gradual accumulation of genetic changes in Darwinian vs. direct transfer of acquired traits in Lamarckian).
What has the author John C Jay written?
John C. Jay has written: 'A catalogue of the shells, arranged according to the Lamarckian system' -- subject(s): Catalogs and collections, Mollusks, Natural history collections, Catalogs
What mechanism is not a mechanism for genetic variation?
Mechanisms such as gene flow, mutation, genetic drift, and natural selection are all considered mechanisms for genetic variation. Non-genetic mechanisms, such as Lamarckian inheritance or acquired characteristics, are not considered valid mechanisms for genetic variation in the traditional sense.
Why don't sumo wrestlers father overweight children?
Some do, others don't. Suma wrestlers get their size through training and diet, their daily calorie intake is many times what a normal person eats. Unless you're a believer in the Lamarckian theory of passing down acquired characteristics to your offspring, this wouldn't affect your children.
Do you agree or disagree with the theory of Social Darwinism?
One. It is not a theory, except in some benighted sociological sense.Two. Darwin did not develop this concept, Herbert Spencer did, and it is very poor evolutionary theory; somewhat group selectionist and somewhat Lamarckian om nature.Three. So your question is not even answerable except in the negative and in conformation to the two points above.
Improving the intelligence of an adult through education will result in that adult's descendants being born with a greater native intelligence This statement is an example of?
the fallacy of Lamarckian inheritance. It suggests that acquired traits can be passed down to future generations, which is not supported by scientific evidence. Intelligence is influenced by a combination of genetic and environmental factors, and improving an adult's education will not directly affect the genetic makeup of their descendants.
Because Freud believed that the recurring anxiety-provoking experiences of your ancestors are inherited as part of your psyche he can be considered a?
Freud can be considered a psychoanalyst who developed the theory of psychoanalysis, which explores how unconscious processes influence behavior. While he did propose the idea of inherited experiences influencing the psyche through the concept of the Oedipus complex and childhood experiences, this aspect of his theory is considered more controversial and less supported by modern psychological research.
Why did Darwin think giraffes are a good example of natural selections?
Actually, it was Lamarck who earlier introduced the giraffe as an example for evolution - Lamarckian evolution, to be sure. Lamarck proposed that there was some mechanism by which the short-necked ancestors of giraffes could acquire a change such that their offspring would have necks better suited to their needs. Darwin applied natural selection to the same example mainly because it had already been discussed in such detail.
What is evening primrose oil good for?
Evening primrose - Oenothera Lamarckian - has been proven effective in the treatment of a number of disorders, including PMS, rheumatoid arthritis, & hyperactivity in children.
Do scientist believe some skills can be passed on from generation to generation?
Specific skills such as bike riding? No, as this would be a Lamarckian acquired characteristic and certainly not supported by the evidence and not under epigenetic phenomenon, such as methylation of chromosome that passes from generation to generation.
