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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.
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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 are the key differences between paralogs and orthologs in terms of their evolutionary relationships and functional roles?
Paralogs are genes within the same species that have evolved from a common ancestor through gene duplication, leading to similar functions but potentially different roles. Orthologs, on the other hand, are genes in different species that have evolved from a common ancestor through speciation, maintaining similar functions and roles.
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.
What is the paralog definition in biology and how does it differ from orthologs?
In biology, paralogs are genes that are related through a gene duplication event within the same species. They have similar functions but may have diverged over time. Orthologs, on the other hand, are genes that are related through speciation events and are found in different species. They typically have the same function.
What is the difference between paralogs and orthologs in terms of their evolutionary relationship and functional similarities?
Paralogs are genes within the same species that have evolved from a common ancestral gene through gene duplication. They may have similar functions but can also have diverged functions due to evolutionary changes. Orthologs, on the other hand, are genes in different species that have evolved from a common ancestral gene through speciation. They are more likely to have similar functions due to their shared evolutionary history.
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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