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Speciation that results from geographical isolation that leads to reproductive isolation?
Wiki User
∙ 13y ago
Allopactric ( other country ) speciation.
Wiki User
∙ 13y ago
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What is the relationship between the results and the conclushion?
The relationship between results and conclusions are that the information from the results lead a person(s) to form a conclusion.
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Journal of Irreproducible Results was created in 1955.
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Sandstone is the rock that results when sand liquefies.
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Polyploid speciation is perhaps the fastest form of speciation because it results in immediate?
reproductive isolation
Why do geographical isolation is not regarded as a reproductive isolating mechanism?
Geographical isolation is not a cause of speciation in an asexually reproducing organism because the population is self-pollinating and would be less prone to the factors which results from geographical isolation.
Speciation without geographic isolation is called what?
Sympatric Speciation develops within the range of the parent population. This type of speciation does not include geographical isolation, and can occur rapidly if a genetic change results in a barrier between the mutants and the parent population.
Explain how isolation helps speciation?
Reproductive isolation prevents variations from spreading throughout the entire population. Since genetic variations basically occur randomly, the chances that the same variations will occur in both reproductively separated subpopulations are vanishingly slim. Thus, genetic divergence between both subpopulations will occur, and this may eventually lead to speciation. Isolation stops populations of the same species from interbreeding. This results in separate breeding among populations and genetic differences become more pronounced with each generation.
What causes geographic isolation?
Geographical isolation involves the separation of a group of organisms from the rest of the population, or a population from other populations by geographical means, be it by volcanic activity, a flood, a new river that cannot be crossed. The idea being that the population can only breed with itself and not with other populations, leading to genetic isolation. This is called the founder effect. The separated organisms can only mate amongst themselves, reducing their genetic diversity as they have a limited range of alleles. This can lead to speciation etc...
This is some barrier to reproduction among a species of organisms It often results in genetic change over time and the development of new species?
reproductive isolation
Physical separation of a population from the rest of its species is called what?
This could occur by two mechanisms: vicariance and dispersal. Vicariance is where a geographical barrier arises to split a population in two. For example, The isthmus of panama used to be below water and the aquatic habitat on the east and west were accessible to the fish and other animals that lived there. When the isthmus split those two waters, that is considered a vicariant event. The second mechanism is dispersal. An example would be humans crossing the Bering straight from Asia to North America. The humans that got to North America bred and started a new population that eventually gathered some genetic differences from the population in Asia.
Speciation often results from which type of selection?
I dk
What causes an uneven isolation that results in global wind currents?
Earths Tilt
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.
How do change Genetic equilibrium lead to speciation?
Allele frequency is altered by genetic drift, natural selection, migration, mutation, or nonrandom mating. This results in a change in genetic equilibrium in a population that is evolving. Evolution leads eventually to speciation.
Does convergent evolution result in speciation?
All evolution that results in increasing genetic divergence between subpopulations may result in speciation. That includes convergent evolution: convergence occurs at the phenotypical level, not at the genetic level.
