How does geographic isolation contribute to the evolution of a new species?

Answer 1

the answer is in page 497 starts where it says over several and ends where it says isolated population...

Here is the answer more specific..... It contributes because isolated groups may experience different environments then other species somewhere else where so they will have to adapt to there environment to survive..for example if you put a bird on one island and a bird on another island farther away with a different environment they are both gonna adapt to there environment and become 2 different species

Good answer but i think mine might be a little more informational. Also i got this answer in the McGraw Hill Glencoe life science book on page 159 bottom left.

Geographic Isolation contributes to evolution because many gene mutations occur. A species has already adapted to that cold environment so that they will change. This will cause the organism to not be able to mate with any other of their old species. This also adds variations to populations. The Key deer, for example, evolved because of geographic evolution 4,000-6,000 years ago. Now the key deer will only be able to mate with other deer that went through the same mutations in geographic evolution.

Answer 2

Geographic barriers affect the evolution of organisms in many ways, but mainly, they can create geographic isolation, where one population of a species is separated from another. Because these two populations can no longer interbreed, the populations adapt and mutate on their own, independent of the other population. Given enough time, these adaptations and mutations can result in the two populations becoming entirely different species.

Answer 3

Certain geographic features isolate a small number of individuals from the rest of the poopulation. Variations that are not common with the larger poopulation may become common with the isolated population so that the variations can create new breeds in the isolated part of the population.Therfore, not only can evolution take place in the crowded areas but also in the isolated part of the population.

Answer 4

Geographic isolation allows genetic divergence between isolated subpopulations stemming from the same ancestral stock to increase unimpeded. Since genetic divergence between populations affects their hybridisation rates, decreasing it, the end result of continued isolation will be a cessation of interbreeding between the two populations, even if the populations were to be brought back into the same shared habitat. Speciation has occurred.

Answer 5

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