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How Lamarck an Darwin would have explained the large eyes of an owl?
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Is Lamarck or Darwins theory more credible?
Darwin's. Duh. Lamarck believed in evolution by acquired traits; i.e., if a blacksmith hammers all day, his arm becomes strong. By Lamarck's theory, the blacksmith's strength would be transferred to his offspring, but this is never observed.
How did lamark propose that species change over time?
Jean-Baptiste Lamarck suggested an idea that Darwin would later expand upon. Lamarck suggested that any changes a creature underwent during its lifetime would be passed down to the offspring. He also believed unused parts would just go away over time, due to this.
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.
How was lamarks theory of evolution different than Darwin's theory?
Lamarck's theory of evolution proposed that traits acquired during the lifetime of the parent were genetically passed on to children. Some animal might, according to Lamarck's theory, learn a novel way of obtaining food, and then its children would be born with this novel mechanism already in place. Darwin, contrarily, proposed that lineages evolved new traits though natural selection: by the elimination of lineages that do *not* possess a certain trait.
Why did scientists reject Lamark's idea of evolution?
Lamarck led the way for and had ideas that helped Darwin. However, his observations regarding the mechanisms of evolution were, with the exception of one, totally backwards. To summarize Lamarck, he hypothesized that organisms somehow had a choice in their traits and could change to fit the environment (he called these ideas his theories of need and his theory of use and disuse). The part he was correct on was that should an organism change, they would pass the traits on to their offspring. Darwin said, basically, the opposite. Darwin observed that organisms were born with slight differences (variations) and those variations might give some members of a species an advantage in the struggle to survive in the environment. The reward for survival was that the organism got to reproduce and pass those traits on to their offspring. Of course, the offspring might show some variation and the whole process would continue to repeat. However, the bottom line with Darwin (and contrary to Lamarck) was that an organism had no choice in its traits as an organism is born with or without the advantage. Darwin, without knowing its mechanisms, recognized that genetics played a part in evolution. Darwin died not knowing of Mendel's work on genetics which, of course, substantiates Darwin's theory.
What scientists DID NOT influence Darwin's theory of natural selection?
Darwin read the book Lamarck wrote and said that he did not get one idea from it as it was ludicrous in content. So, Lamarck would be the one scientist that did not influence Darwin according to Darwin.
How would Lamarck have explained the large eyes of an owl?
Darwin would have said that a few owls were born with bigger eyes. The owls with the big eyes would survive better and have more offspring so the owls with small eyes were less common untill there were only big eyed owls. This is called natural selection.
What would Lamarck say about Darwin's theory?
"Why, Homes, how absurdly simple. I shoulda thought of that myself."
What do you think if i say that for me there are no differences between Darwin and Lamarck?
i would agree with you. i belive they both had the same theory.
Is Lamarck or Darwins theory more credible?
Darwin's. Duh. Lamarck believed in evolution by acquired traits; i.e., if a blacksmith hammers all day, his arm becomes strong. By Lamarck's theory, the blacksmith's strength would be transferred to his offspring, but this is never observed.
If Charles Darwin were to sit down to debate Jean-Baptiste Lamarck which one what arguments would Darwin be most likely to accept as sound?
it's likely that organisms, including bacteria are always changing
If Charles Darwin were to sit down to debate Jean Bapiste Lamarck which one what arguments would Darwin be most likely to accept as sound?
C. It's likely that organisms, including bacteria, are always changing
How would vestigial traits be explained if evolution occurred via inheritance of acquired characters as proposed by Lamarck?
as a change in an individual's phenotype in response to an environmental challenge
How did lamark propose that species change over time?
Jean-Baptiste Lamarck suggested an idea that Darwin would later expand upon. Lamarck suggested that any changes a creature underwent during its lifetime would be passed down to the offspring. He also believed unused parts would just go away over time, due to this.
If Charles Darwin were to sit down to debate Jean-Baptiste Lamarck what would they agree on?
C. It's likely that organisms, including bacteria, are always changing 8/22/08
What are the similarties between Darwin's theory of evolution and lamarck's theory of evolution?
Darwin's theory was that beneficial traits would be favored in a population by a mechanism called natural selection. Lamarck proposed that acquired traits would be passed on to the offspring. Darwin's theory is favored over Lamarck's because there is no identified mechanism for passing on acquired traits e.g., your baby will not be born with pierced ears even though yours are pierced. In Darwin's theory, the traits that are favorable for an organism offer some adaptive advantage to those members of the population that possess it. Having the advantage allows them to produce more offspring e.g., rabbits range in color from black to white--in a snowy environment, the white ones have the advantage over the darker ones so they breed, well, like rabbits.
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.
