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Evolution and speciation. ( microevolution is imprecise )
Alleles can change over time in a population of organisms without any great change in the phenotype or behavior of a species. Then, to keep it simple, a geographic barrier arises between portions of the population and they can no longer interbreed, Mutations happen in the separate populations and evolution can take two different paths now with natural selection driving the winnowing of variations so that adaptive change is happening in the immediate environment of the sundered populations. Given enough time the two populations gene pools will have such a variance in the alleles contained in those two gene pools that two different species will arise.
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What statement about microevolution and macroevolution is true?
Described by the definition for evolution. Evolution is the change in allele frequency over time in a population of organisms.The prefered terms are evolution ( instead of microevolution ) and speciation ( instead of macroevolution ).
Can microevolution lead to macroevoultion?
Given the opportunity for reproductive isolation between subpopulations to develop, macroevolution seems like an inevitable consequence of microevolution. Not only can speciation occur (and not only is it observed): it's hard to imagine how it could not occur.
Microevolution can be described as?
Described by the definition for evolution. Evolution is the change in allele frequency over time in a population of organisms. Many biologists, myself included, do not like the terms micro and macro evolution. The prefered terms many of us use are; evolution ( instead of microevolution ) speciation ( instead of macroevolution )
What is a true statement about microevolution and macroevolution?
Microevolution can lead to Microevolution
How do evolution and microevolution differ?
Miroevolution is the change in allele frequency overtime in populations of organisms not leading to speciation; below the taxa level. Macroevolution is speciation. This terminology is not favored by many biologists because there is some implied difference in processes. That is to get from micro to macro. Actually evolution long enough is macro. So, many biologist prefer the terms. Evolution Speciation instead of micro and macro
What statement about microevolution and macroevolution is true?
Described by the definition for evolution. Evolution is the change in allele frequency over time in a population of organisms.The prefered terms are evolution ( instead of microevolution ) and speciation ( instead of macroevolution ).
Can microevolution lead to macroevoultion?
Given the opportunity for reproductive isolation between subpopulations to develop, macroevolution seems like an inevitable consequence of microevolution. Not only can speciation occur (and not only is it observed): it's hard to imagine how it could not occur.
What is a statement about microevolution and macroevolution?
Microevolution can lead to Microevolution
Microevolution can be described as?
Described by the definition for evolution. Evolution is the change in allele frequency over time in a population of organisms. Many biologists, myself included, do not like the terms micro and macro evolution. The prefered terms many of us use are; evolution ( instead of microevolution ) speciation ( instead of macroevolution )
What is a true statement about microevolution and macroevolution?
Microevolution can lead to Microevolution
How do evolution and microevolution differ?
Miroevolution is the change in allele frequency overtime in populations of organisms not leading to speciation; below the taxa level. Macroevolution is speciation. This terminology is not favored by many biologists because there is some implied difference in processes. That is to get from micro to macro. Actually evolution long enough is macro. So, many biologist prefer the terms. Evolution Speciation instead of micro and macro
What type of evolution with small scale changes in genes is called?
Some would call that microevolution. I would not. Some divide evolution into micro and macro. Evolutionary biologists prefer to use the terms evolution and speciation.
What is it called when species are different from their ancestors?
Speciation.
Which statements about microevolution and macroevolution is true?
microevolution can lead to macroevolution
What characteristics do scientists use to further categorize plants to break them down into different categories?
Microevolution and Macroevolution : NovaNet
Which of the following can result in instant speciation?
Allopatric speciation and sympatric speciation are two factors. Allopatric speciation occurs when physical barriers are formed, separating the specie. This will cause the specie to evolve at different rates causing a new specie to form. Sympatric speciation is less likely to occur when comparing it to allopatric. In sympatric speciation is no longer physical but generic. For example a mutation in the genetic order of the specie (which does not happen as often as physical barriers), and a different mating preference/season.
What do scientists often use to study microevolution?
Scientists use many different things to study microevolution. One tool they use is called Mendel's Accountant, which allows realistic numerical simulation of the mutation/selection process.
