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Biology 24 Online
OpenStudy (anonymous):

Which is an example of a population? A. all the individuals that make up a species B. all the gray squirrels that live in a forest C. each individual in a herd of bison D. one of the trees in a forest

OpenStudy (anonymous):

I think " B. all the gray squirrels that live in a forest" would be the correct answer

OpenStudy (anonymous):

Welcome to Open Study @Goobinator

OpenStudy (anonymous):

Thanks @DollyAcquah

OpenStudy (anonymous):

You're Very Welcome @Goobinator!!! :)

OpenStudy (anonymous):

@DollyAcquah What was the difference between Darwin and Lamarck? A. The idea of mutations was understood by both, but Darwin was able to prove it. B. The idea of mutations was understood by both, but Lamarck was able to prove it. C. Lamarck was able to explain evolution with evidence, something Darwin did not do. D. Darwin was able to explain evolution with evidence, something Lamarck did not do.

OpenStudy (anonymous):

Lamarck recognized that animals are not fixed entities because he noticed they have traits that help them cope with their environment. So he recognized that species change just like Darwin. But Lamarck thought that organisms undergo changes within their own lifetime, and that such "acquired characteristics" would then be passed to their offspring. The classic example is the giraffe: he supposed that a giraffe might increase its neck length by some amount as it stretched for food in tree branches, and that the change would happen in its lifetime. Those acquired traits would then be passed to the subsequent generation, which would then have a longer neck than the previous generation. Darwin proved him wrong by stating that the whole species adapts through natural selection. So individual change does not affect the species. Darwin also recognized different species could have common ancestors. In the giraffe example, Darwin recognized different giraffes had different neck lengths. In places where trees are taller, the longer necked giraffes eat a little more. This will have a slightly higher survival rate and therefore a higher matting rate. So their characteristics will be passed on to the next generation.

OpenStudy (anonymous):

Wow you're awesome @DollyAcquah

OpenStudy (anonymous):

yup ^.^

OpenStudy (anonymous):

Can you please fan me?

OpenStudy (anonymous):

Just did @DollyAcquah! :)

OpenStudy (anonymous):

@DollyAcquah I just got 87%! Thanks so much!

OpenStudy (anonymous):

you're welcome :D

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