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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.
They both are mechanisms by which new species arise grad point
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.
Sympatric speciation and allopatric speciation are both mechanisms of speciation where new species arise from a single parent species. The key difference is in the geographic isolation; allopatric speciation involves physical separation of populations, while sympatric speciation occurs within the same geographic area. Both mechanisms involve genetic divergence leading to reproductive isolation.
Allopatric 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.\
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Resource partitioning would be most likely to occur between?
Competing species that share similar ecological niches and resources. By partitioning resources, such as food, space, or time, these species can coexist by reducing direct competition and allowing each species to specialize in utilizing different resources. This can help to minimize competition and promote species diversity within a community.
What happen when organisms populate a new area and are isolated geographically from other populations of the same species?
Isolated populations can undergo genetic divergence over time due to genetic drift and natural selection. This can result in the accumulation of unique genetic variations, potentially leading to the formation of new species through the process of speciation. Over generations, the isolated population may evolve different characteristics and adaptations compared to the original population.
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?
A group of similar cells performing similar functions is called a tissue. Tissues work together to carry out specific functions in the body.
How are new species formed?
New species can arise as a result of isolation. This is where two populations of a species become geographically separated. For example, Charles Darwin described speciation of finches this way.Darwin studied the wildlife on the Galápagos Islands (a group of islands on the equator, almost 1,000 km west of Ecuador). He noticed that the finches (Songbirds) on the different islands were similar to each other.However, the finches showed wide variations in their size, beaks and claws from island to island - for example, their beaks were different depending on the local food source. Darwin concluded that, because the islands are so distant from the mainland, the finches that had arrived there in the past and had changed over time.
How is sympatric speciation similar allopatric speciation?
They both are mechanisms by which new species arise
How is symatric speciation similar to allpatric speciation?
Both sympatric and allopatric speciation involve the formation of new species through the genetic isolation of populations. In both cases, reproductive barriers develop that prevent gene flow between populations, leading to divergence and eventually the formation of separate species. The key difference between the two is that sympatric speciation occurs within the same geographic area, while allopatric speciation involves speciation due to geographic isolation.
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 similar organisms do not interbreed because of a physical barrier?
Allopatric Speciation : NovaNet
What describes why similar organisms do not interbreed because of a physical barrier.?
Allopatric Speciation
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.
What is the process in which similar species become disimliar?
It's called Speciation.
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.
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 prevents speciation?
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