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allopatric speciation happens when a physical barrier divides two populations of the same species and sympatric speciation happen when no physical barrier divides the member of a population, but methods such as polyploidy (chromosome doubling) do not let the members of the species have fertile offspring, 2 species are formed (the parental "normal" species and the divergent species "polyploids"). Remember that a species is defined as a population that when mated with one another produce fertile offspring. A polyploid and a parental organisms can not produce fertile offspring together so they become two different species and speciation is said to have occurred.
Leonora Medhurst
Thelma Ward
They both are mechanisms by which new species arise grad point
Wiki User
∙ 12y agoallopatric speciation happens when a physical barrier divides two populations of the same species and sympatric speciation happen when no physical barrier divides the member of a population, but methods such as polyploidy (chromosome doubling) do not let the members of the species have fertile offspring, 2 species are formed (the parental "normal" species and the divergent species "polyploids"). Remember that a species is defined as a population that when mated with one another produce fertile offspring. A polyploid and a parental organisms can not produce fertile offspring together so they become two different species and speciation is said to have occurred.
Wiki User
∙ 12y agoAllopatric speciation means that speciation occured in different regions.The key with allopatric speciation is geographical separation. For example, say you have a squirrel population in a mountain, and over years a canyon forms a physical barrier between the two sides so that what was once 1 species of squirrel is split up into two different populations on different sides Over time, each population will adapt to its region and eventually speciate. This actually took place in I believe the Grand Canyon between Abert and Kaibab squirrels. You can look that up if you would like.
Sympatric speciation means that one population of one species became two species while in the same geographic region with no physical separation. This usually occurs because different inviduals of the same species begin to occupy a distinct niche and eventually become specifically adapted for that role.\
Wiki User
∙ 7y agoSympatric speciation involves a behavioral barrier while allopatric speciation involves a physical barrier. [gradpoint] to my 3AM fans from DFC
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Resource partitioning would be most likely to occur between?
sympatric populations of species with similar ecological niches
What happen when organisms populate a new area and are isolated geographically from other populations of the same species?
The species will eventually evolve to be similar, but not exactly like the main species.
Group of similar cells that perform a similar function?
tissues are group of cell that perform a specific similar function.
A group of similar cells preforming similar functions is called what?
tissue
A tissue is composed of a group?
Of similar cells with the same functions
How is sympatric speciation similar allopatric speciation?
They both are mechanisms by which new species arise
How is sympatric similar to allopatric speciation?
They both are mechanisms by which new species arise grad point
Why similar organisms do not interbreed because of a physical barrier?
Allopatric Speciation
What describes why similar organisms do not interbreed because of a physical barrier.?
Allopatric Speciation
What similar organisms do not interbreed because of a physical barrier?
Allopatric Speciation : NovaNet
Describes why similar organisms do not interbreed because of a physical barrier?
Allopatric Speciation
How did the continental shift theory affect evolution?
The ultimate allopatric ( geographic ) speciation. If you had a population of quite similar organisms in a area that split the population into two or more populations when continental drift occurred you would have different mutations and changing environments putting selective pressure on two or more populations now.
Resource partitioning would be most likely to occur between?
sympatric populations of species with similar ecological niches
What is the process in which similar species become disimliar?
It's called Speciation.
Different geographic populations of a species differ in some characteristics but are uniform in many other characterswhat is the reason for this uniformity?
Allopatric speciation. Initially both species are the exact same. But when separated by geographical barrier, they develop adaptations for the new environment. Survival of the fittest results in different genes being selected for. New gene pool results in a new species that are almost similar but reproductively isolated.
What happen when organisms populate a new area and are isolated geographically from other populations of the same species?
The species will eventually evolve to be similar, but not exactly like the main species.
What is the formation of a new species as a result of evolution?
The process of the formation of a new species is called speciation.This usually requires some kind of event that splits a population into two or more isolated populations that can no longer interact. Ordinary evolutionary processes then act on each population independently, usually causing genetic divergencebetween the populations. If the divergence gets large enough that they either can no longer interbreed or refuse to interbreed between populations when again given the chance; then they are "new" species.
