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If two populations have been reproductively isolated and can no longer breed and produce fertile offspring the process of what has occurred?
If two populations of the same species no longer interbreed then their differences will start to become more pronounced and eventually they will become so different that they will be classified as two different sub-species.
Why does geographic isolation cause speciation (Apex)?
it prevents gene flow between populations
How can populations become reproductively isolated?
Populations can become reproductively isolated through mechanisms such as geographic isolation (resulting in allopatric speciation), behavioral differences (resulting in prezygotic isolation), or genetic changes that lead to incompatibility between individuals (resulting in postzygotic isolation). These barriers prevent gene flow between populations, leading to their divergence and ultimately speciation.
How does reproductive isolation causes speciation?
It reduces gene flow.
When are two species to be reproductively isolated?
Two species are considered reproductively isolated when they can no longer interbreed or produce viable offspring. This isolation can occur due to factors such as differences in mating behaviors, physical barriers preventing mating, or genetic incompatibility that leads to sterile offspring. Reproductive isolation is a key step in the process of speciation, where new species arise from a common ancestor.
What must happen for speciation to happen?
A population must be isolated in some way.
How does speciation take place?
several generations
How does evolution produces new species?
Evolution produces new species through a process called speciation, where populations of a species become reproductively isolated from one another, leading to the accumulation of genetic differences over time. This can occur through mechanisms such as geographic isolation, genetic mutations, and natural selection, ultimately resulting in the emergence of distinct species that can no longer interbreed.
When is speciation is complete?
When the two populations can no longer interbreed.
How does roproductive isolation relate to evolution?
If two sub-populations of a species become reproductively isolated, it means that adaptation or genetic drift can make the two populations diverge genetically. If, as a result of this divergence, upon reintroduction, members of the two sub-populations no longer reproduce successfully, the two sub-populations have become different species.
How can isolation of a group result in new species?
After many changes evolve in a group of animals, individuals of that group can no longer mate with the rest of the species that remain unchanged. That is the definition of species: individuals that are able to breed among themselves but are not able to breed with other species. When a group of individuals is separated from the rest of their species for a long time, the individuals can evolve different traits. The longer the group is isolated from the rest of the species, the more likely it will evolve into a new species. One example of this has been seen in fish species in the lakes of Switzerland, Great Britain, and Scandinavia. Almost every lake has different forms, believed to have evolved from one species.
What factor caused two populations to become reproductively isolated?
It usually is some sort of physical barrier like an large space between islands.
