Members of a single species that occupy a particular area and are able to interbreed are a population. Today, there are 16,938 threatened species on the planet.
When populations stemming from the same ancestral stock no longer interbreed, even if they occupy the same habitat.
Nation
Allopatric Species:%20%20species%20occupying%20areas%20separated%20by%20space%20or%20time','(allo%20=%20other,%20different;%20patri%20=%20fatherland,%20habitat)','../../sounds/bio303/allopatric.wav')" onmouseover="window.status='Occupy different areas'; return true">Allopatric species are species which, because they occupy areas separated by space (geographic isolation) or time, are reproductively isolated. It is often unknown whether, if brought together, they could actually interbreed. As an example, dogs and coyotes were originally allopatric species. However, when humans and their dogs moved into coyote-inhabited areas, it was discovered that dogs and coyotes are capable of interbreeding and producing viable offspring. By now, there are so many dog genes in the coyote population that there may no longer be any such thing as a 100% coyote. for further references see: http://biology.clc.uc.edu/Courses/bio303/natural%20selection.htm
Extreme radiation events of the organisms that survive the mass extinctions as they evolve to occupy the niches abandoned by the organisms going extinct.
No. Because the hawk and owl hunt similar prey but occupy different ecological niches. Yes. The hawks hunt in daylight, and are replaced by owls species at night, but there are owls that hunt in the same areas as the hawks, so they do occupy the same ecological niche.
True
population :D
When populations stemming from the same ancestral stock no longer interbreed, even if they occupy the same habitat.
a community
If 2 mouse species tried to occupy the same niche they would fight. The mice fight to right to occupy the niche. The winner of the fight gets the niche.
analogous structure
It's natural niche.
We call this a population.
Species are community of populations that are reproductive isolated from other and that occupy a specific niche. Such sister species can live in sympathry.
Species are community of populations that are reproductive isolated from other and that occupy a specific niche. Such sister species can live in sympathry.
Beavers
Nation