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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.

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Q: Darwin and Lamarck had different ideas about why all giraffes now have long necks why?
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Compare lamarck's and Darwin's ideas about evolution takes place?

kos


What scientist had ideas about evolution and adaptation that influenced Darwin?

Jean-Baptiste Lamarck


What were the main ideas Lamarck proposed that influenced Darwin?

Lamarck proposed that traits acquired during one's lifetime could be passed to the next generation.


What ideas related to evolution did lamarck and Charles Darwin share?

The basic one of evolution. That organisms change over time.


Scientist whos ideas about evolution were the same as darwins?

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


Who pioneered the theory of evolotion?

Alfred Russel Wallace,Charles Darwin built the theory of Evolution.Jean-Baptiste Lamarck's ideas also helped.


When did Lamarck publish his ideas on evolution?

early 1800s


What idea did Lamarck and William smith contribute to the study of fossils?

Lamarck's ideas were that he had a great contribution to the study of evolution.


How did Lamarck's ideas differ from Darwin's?

Lamarck believed an individual organism acquired traits during its lifetime and passed those traits on to its offspring. He lacked support for his ideas. Darwin documented how inherited traits could be passed on by natural selection, that adaptations that give an organism an advantage is passed on through subsequent generations and becomes more common. He had evidence for his ideas (finches, tortoises…).


When did lamarck publish his own ideas on evolution?

Around 1793.


The gradual change in groups of organisms that occurs across many generations?

is called evolution. There are various theory's as to how this happened including Charles Darwin's theory of natural selection, Lamarck's acquired characteristics as well as religious and creationist ideas.


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.