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What is an isolating mechanism and how does it create a situation leading to speciation?
Wiki User
∙ 12y ago
Water (islands), mountains, as well as deserts act as isolating mechanisms. Continental Drift resulted in the isolation and subsequent development of animals
that are genetically quite different that fill similar niches in the isolated environments.
A comparison of animals that fill similar niches in Australia as compared to the US or
Africa yields Kangaroos and Wallabies that fill the same niches as deer and antelope.
Initial speciation begins as as better adapted animals occupying a niche push the marginalized individuals out into other areas where any unique genetic characteristics
or mutations that make them better able to adapt to a new niche are selected for
based on survival rate.
Wiki User
∙ 12y ago
Wiki User
∙ 9y agoVicariance is an isolating mechanism. Vicariance occurs when a physical barrier divides a population and leads to the evolution of a new species.
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What is believed to be the dominant mode of speciation among most groups of organisms?
The dominant mode of speciation among most groups of organisms is allopatric speciation. This occurs when populations of a species become geographically isolated from each other and over time, genetic and environmental differences accumulate, leading to the formation of distinct species.
What is the restoring mechanism of the innar ear?
The restoring mechanism of the inner ear is primarily carried out by hair cells. These specialized cells in the cochlea convert sound vibrations into electrical signals that are then transmitted to the brain. If hair cells are damaged or destroyed, they are not able to regenerate, leading to permanent hearing loss.
What are the two factors that account for diversity of species?
The diversity of sexually reproducing species is a result of the fact that a) gene pools change over time (by selection and genetic drift) and that b) reproductive isolation occurs, leading to the inability of the descendants of formerly interbreeding subpopulations to interbreed (speciation).
What physical method is used to control microbial growth works via the mechanism of protein denature?
Heat is the physical method used to control microbial growth via the mechanism of protein denaturation. By exposing microbes to high temperatures, the heat disrupts and denatures the proteins in their cells, leading to their inactivation and ultimately killing them. This method is commonly used in processes such as pasteurization and autoclaving to sterilize equipment and destroy harmful microorganisms.
What was the leading economic sector in 1849?
In 1849 the largest leading economic sector was Agriculture with 59%
What is the leading cause of children isolating themselves?
because it's unfair
What is the ending of the selection?
That adaptive change takes place leading to eventual speciation.
What is believed to be the dominant mode of speciation among most groups of organisms?
The dominant mode of speciation among most groups of organisms is allopatric speciation. This occurs when populations of a species become geographically isolated from each other and over time, genetic and environmental differences accumulate, leading to the formation of distinct species.
What is divergence in relation to evolution?
Increasing divergence between reproductively isolated populations, occasionally leading to speciation, is one effect of evolution.
What is the principles of mechanisms?
The leading theory concerning the mechanism of evolution is natural selection.
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
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.
What isleading cause of pwc accidents?
The leading cause of powered watercraft, such as jet skis, accidents is that they have no braking mechanism. They coast to a stop, and while coasting, there is no turning ability.
How do you formulate defeat mechanism in defensive operation?
Defeat mechanism involves four basic ways. these are destruction, dislocation, isolation and disintegration. First you have to identify what to defeat is it Leading Brigade or logistis echelon. Then you have to choose means to defeat. That means these four ways. at last you have to analysis how to defeat.
What can you concluded about the theory of evolution from the evidence that you have gathered?
That the theory of evolution by natural selection fits the facts of evolution. The theory of evolution by natural selection is based on myriad lives of converging evidence and is the best explanation we have for the adaptive changes leading to speciation in populations of organisms.
What is the restoring mechanism of the innar ear?
The restoring mechanism of the inner ear is primarily carried out by hair cells. These specialized cells in the cochlea convert sound vibrations into electrical signals that are then transmitted to the brain. If hair cells are damaged or destroyed, they are not able to regenerate, leading to permanent hearing loss.
Which of the following is the most powerful evolutionary force in large populations over time?
Only natural selection could be the answer here as natural selection is the main driver of adaptive change leading to evolutionary change and speciation in large populations.
