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What else can I help you with?
A population of animals is split in half by a river. Before speciation is completed the two halves are rejoined when a drought causes the river to run dry how would this impact the two populations?
the gene flow would increase (apex)orGene flow would increase between the two halves, and speciation would not occur.
What species concept should be used in the apple maggot fly case?
In the case of the apple maggot flies, it is an example of sympatric speciation. Two different populations occur in different niches where there is no gene flow between the two.
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 are the 5 steps to Speciation?
There are no discrete steps to speciation. There are a number of boundary conditions that are met in most cases. Speciation is the result of any situation that leads to the genetic, behavioural and/or morphological divergence of subpopulations of the same species, which may in turn lead to a decline in interbreeding frequency. The causes for such divergence may vary. The clearest example of the principle is when two subpopulations become geographically isolated (for instance due to migration, floods or some other natural event), and diverge as a result of genetic drift. Once the two population have diverged to the degree that they would no longer produce fertile offspring together even if they were put back together again, we say that speciation has occurred.
How can a new species from?
To put it simply, new species can form when organisms within a population become so genetically different they can no longer reproduce with one another without generating harmful mutations. This can be caused by genetic drift and geographic isolation. Two populations of the same species who live in different parts of the world will diverge and go on separate genetic paths, until eventually the two populations become genetically different and branch off into two different species.
The process by which two populations become so different they can no longer interbreed?
Your answer is speciation
When is speciation is complete?
When the two populations can no longer interbreed.
When speciation complete?
When the two populations can no longer interbreed.
Process in which isolated populations of the same species become new species is called?
In Sympathetic Speciation, a species evolves into a new species without any barriers that separate the populations.In Allopatric Speciation, a population divided by a barrier, each population evolves separately, and eventually two populations cannot successfully interbreed.
What happens when two populations have been reproductively isolated and can no longer breed?
Speciation
Why do geographic isolation cause speciation?
It prevents the two populations from interbreeding. :) -Apex-
How can reproductive isolation lead to speciation?
Reproductive isolation separates the reproduction of one population into two populations. Over time after generations, the two separate populations start living and reproducing differently, so they evolve into two separate species, which is speciation (also known as divergent evolution). Reproductive isolation and speciation reduces gene flow.
How can you outline an example of the process of speciation?
Speciation is the process by which a new species arises. This can occur through various mechanisms such as geographic isolation, where populations become separated and diverge genetically, leading to reproductive isolation. Over time, these populations accumulate enough differences that they can no longer interbreed, resulting in the formation of two distinct species.
What is the main factor that leads to speciation between two populations?
Lack of exchange of genetic information.
Two populations that are sperated by a mountain range can no longer interbreed to produce fertile offspring this is an example of?
This is an example of geographic isolation, where a physical barrier like a mountain range separates populations, preventing gene flow and leading to reproductive isolation. Over time, this can result in the populations evolving independently and potentially becoming distinct species.
Does geographic isolation contribute to evolution-?
A geographic barrier eg mountain range, river, ocean, desert, can split a species into two populations which can no longer mix with each other. By splitting up a species into two separate populations a geographic barrier can lead to the formation of a new species. The two separate populations start to develop in isolation from each other. Different mutations will occur in the two populations and natural selection will adapt them to the slightly different conditions in the two areas. Given enough time the two populations will become so different that if they are brought together again they will no longer be able to interbreed ie they will have become two different species. This is called allopatric speciation.
What is the is the first step in allopatric speciation?
The first step in allopatric speciation is the isolation of populations, where gene flow between the populations is prevented by a physical barrier, such as a mountain range, river, or ocean. This isolation allows for genetic divergence to occur due to different selection pressures and genetic drift in each population, eventually leading to speciation.
