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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.


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.


Polyploid speciation is perhaps the fastest form of speciation because it results in immediate?

reproductive isolation


How can isolation of groups be involved in speciation?

Speciation is the evolution of new species from existing species and that is what has happened here. If a species was split up due to some sort of natural disaster, each party would evolve on their own because of the isolation. They will adapt to the new environment and eventually develop a new gene pool - this is when a new species has developed.


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.


What are results from reproductive isolation?

Reproductive isolation can lead to the formation of new species through the prevention of gene flow between populations. This can result in the development of unique genetic traits and adaptations in each isolated population. Over time, reproductive isolation can contribute to the biodiversity of an ecosystem.


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 acts as a barrier preventing interbreeding between different populations of organisms, leading to genetic changes over time through mechanisms like natural selection, genetic drift, and mutation. These changes can accumulate and eventually result in the formation of new species, a process known as speciation.


Physical separation of a population from the rest of its species is called what?

Physical separation of a population would be considered a form of reproductive isolation. This would be considered a prezygotic reproductive barrier (ie, it is a barrier that prevents a zygote from ever being formed.)


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...


Speciation often results from which type of selection?

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What results when a new specles evolves from an existing species?

When a new species evolves from an existing species, it results in speciation, which is the formation of a distinct species that is reproductively isolated from the original species. This can occur due to various factors such as geographic isolation, genetic mutations, or changes in environmental conditions that lead to evolutionary divergence. The new species will have its own unique traits and characteristics that distinguish it from its ancestor.


Why does polyploidy produce new species?

a) Nondisjunction event during meiosisb) Nondisjunction event during mitosisc) Synapsis of homologous chromosomesd) Allopolyploid plants cannot become biologically fit new species; they are always sterile.