Biology

Biology, 04.08.2019 05:00, riplilsnupe023

Why did darwin's contemporaries believe that natural selection could not move a population beyond its initial range of variation?

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Biology, 22.06.2019 11:30, yarrito20011307

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.

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Physics, 06.07.2019 16:20, monithebtslover01

Natural selection. darwin hypothesized that there requisites for natural selection to occur and that there are definite steps to natural selection. note the two models seen here. both of the models illustrate an important requisite for natural selection. that is: a) sexual reproduction must occur. b) there is survival of the fittest. c) variation in the population exists. d) genetic sameness reduces the chances of natural selection.

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Biology, 19.07.2019 16:30, angtrevv

Natural selection can move a population beyond its initial range of variation because

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Social Studies, 16.10.2019 03:30, nevelle

How does artificial selection (controlled by a breeder) compare to natural selection? it usually occurs at the same pace because mutations occur at the same rate. it works equally well, because both principles use the idea of hereditary traits to pass along variation to offspring. it usually is less efficient because there is no competition between individuals. it works well, but, unlike natural selection, will only be able to produce a range of phenotypes based on the initial variation seen within the initial population. it usually is more efficient because it is controlled through breeding and not reproductive success.

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