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Imagine one species that has become isolated from each other for some reason, perhaps an earthquake. The place one finds itself in is a grassland and the second one is in a deep valley that is a rain forest.
The two groups can not connect at all. Because the grassland has fewer resources than the rainforest, the number found in the grass land will be fewer.
The rainforest has more rainfall and those there have to adapt to that. Perhaps they will be preyed upon and the members that have better coloring so that they can hid, will be come in greater numbers.
For now, the colors of the two groups will be different. As time goes on, other small changes will occur that will allow the groups to do well in their environment.
After many, many, many, years, the two maybe so different, that they can't interbred if they could.
Now there will be two species.
What else can I help you with?
How did Dobzhansky and Mayr explain the origin of species?
Dobzhansky and Mayr explained the origin of species through the process of natural selection and genetic variation. They proposed that species evolve over time through the accumulation of small, gradual changes, leading to the formation of new species. Dobzhansky's concept of genetic drift and Mayr's theory of geographic isolation also played key roles in their explanations.
Explain how isolation helps speciation?
Isolation plays a crucial role in speciation by preventing gene flow between populations, leading to genetic divergence. This can occur through geographic isolation (such as by a physical barrier like a mountain range) or reproductive isolation (such as through differences in mating behaviors or timing). Over time, these isolated populations accumulate genetic differences, eventually becoming reproductively incompatible and leading to the formation of new species.
Do you suspect scientists of having an ulterior motive in comig up with the idea of speciation through natural selection and adaptation?
No, the theory of speciation through natural selection and adaptation is based on extensive scientific evidence and research. Scientists aim to understand and explain natural phenomena using evidence-based methods rather than having ulterior motives.
What is are the five fingers of evolution?
The five fingers of evolution refer to five major principles that explain how evolution works: genetic variation, competition for resources, natural selection, adaptation, and speciation. These concepts help us understand how species change and evolve over time in response to their environment.
What isOne of the key contributions of the punctuated equilibrium model is that it helps explain?
One of the key contributions of the punctuated equilibrium model is that it helps explain the pattern of evolution where long periods of stasis are interrupted by short bursts of rapid change. This model helps to account for the gaps and jumps in the fossil record by proposing that species experience most of their evolutionary change during speciation events, rather than gradually over time.
Explain how geographic isolation can lead to speciation?
Geographic isolation may lead to environmental differences, thus leading to an organisms different needs. These slight changes in environment and needs gradually change the organism leading to a different species. This process is called adaptation.
How did Dobzhansky and Mayr explain the origin of species?
Dobzhansky and Mayr explained the origin of species through the process of natural selection and genetic variation. They proposed that species evolve over time through the accumulation of small, gradual changes, leading to the formation of new species. Dobzhansky's concept of genetic drift and Mayr's theory of geographic isolation also played key roles in their explanations.
How did dobzhansky and mayr explain the origin of species in the 1930's?
In the 1930s, Dobzhansky and Mayr explained that species originate through allopatric speciation.
Continental drift help to explain geographic isolation as a component in speciation?
Continental drift contributes to geographic isolation by physically separating populations of the same species, which can lead to the accumulation of genetic differences over time. This isolation can ultimately drive speciation as populations evolve independently in response to different environmental conditions and selection pressures on each continent.
Explain how isolation helps speciation?
Isolation plays a crucial role in speciation by preventing gene flow between populations, leading to genetic divergence. This can occur through geographic isolation (such as by a physical barrier like a mountain range) or reproductive isolation (such as through differences in mating behaviors or timing). Over time, these isolated populations accumulate genetic differences, eventually becoming reproductively incompatible and leading to the formation of new species.
How would you assess the bio-geographic evidence used to explain the divergence of Hawaiian honey-creeper species?
Geographical Isolation
What does the reading stradegy ASICE stand for?
A- assertion S- support I- isolation C- connect E- explain
What is punctuated evolution?
Punctuated Equilibria is a theory proposed by Stephen Jay Gould and Niles Eldredge to explain patterns of speciation in the fossil record. They pointed out that the record seems to show most species undergo long periods of relatively little change (stasis), then undergo rapid bursts of change at irregular (punctuated) intervals. Evolution did not seem to proceed at a stately, constant, slow speed. Gould and Eldredge explained this by taking the standard idea of how species form (allopatric speciation, or speciation in small isolated groups at the periphery of populations) and showing that this process would produce exactly the pattern which is observed in the fossil record. Essentially, evolution and speciation can occur rapidly in small isolated populations, sometimes too quickly for the fossil record to track all of the intermediate forms. The result is what looks like abrupt emergence of forms with little or no transitional stages, when in reality the evolution had occurred through intermediate stages, only too quickly for the slow process of fossilization to capture it.
How does natural selection explain specialization?
It doesn't per se. Speciation occurs usually when two gene pools are isolated long enough by geography or by separate selective pressures that one group becomes able to reproduce with the other with difficulty, and eventually not at all. Horses can mate with zebras and a few other animals for instance, but produce sterile offspring. Speciation has been observed in nature many times, and forced to occur in the laboratory. Google "instances of speciation" for examples.
Who is BlackBerrys targer market explain in demographics phychographics and geographic?
Blackberrys target market are businessman and executives generally populating the metropolitan areas.
If your doing a research project is Austria a geographic political or economic region please explain what one it is?
Austria is a country, so it is a political region.
Do you suspect scientists of having an ulterior motive in comig up with the idea of speciation through natural selection and adaptation?
No, the theory of speciation through natural selection and adaptation is based on extensive scientific evidence and research. Scientists aim to understand and explain natural phenomena using evidence-based methods rather than having ulterior motives.
