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Which form of natural selection is most likely to play a role in speciation?
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∙ 12y ago
Disruptive Selection
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∙ 12y ago
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What is an effect of adaptive radiation?
speciation
What observations did Darwin get from geology?
he noticed that there were different species of animals on different islands which he concluded was from speciation. the geologic form of the different islands led him to the conclusion that they were once a single species on one island.
Are magnesium and chlorine most likely to form a metallic bond?
No. They will most likely form an ionic bond. Metallic bonds form between the atoms of a metal, such as gold or iron.
What type of rock is most likely to form in an earthquake zone?
A metamorphic rock is most likely to form in an earthquake zone.
What A hurricane is most likely to form?
august
Is natural selection a form of adaptation?
Natural selection is what causes adaptation.
Where did the theory of natural selection fall short?
It didn't, actually. While natural selection isn't the complete story of evolution, it is the single most important part of it, and all discussions of evolution must inevitably involve natural selection in some form.
Polyploid speciation is perhaps the fastest form of speciation because it results in immediate?
reproductive isolation
How does nonrandom mating affect evolution?
Non-random mating is otherwise known as sexual selection. Some see this as distinct from natural selection, but I think that sexual selection is merely a form of, or perhaps more a complication of natural selection. Selection, natural or sexual, is the effect that "guides" evolution, that allows evolution to produce populations suited to their environment.
What is the process by which new species form?
Speciation
What kind of selections occurs in many birds when males that build strong nests help care for young are chosen by females as mates?
This is called, sexual selection.
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.
How does natural selection sometimes create a change in a populations?
Natural selection constantly causes change in populations by making them change over time, and occasionally split to form new species.For example, if a population stays together, but their environment starts to change, then natural selection will pick the fittest organisms of that population to live and pass their traits on to their offspring, causing a gradual change in the genetic makeup of the entire populationAnother example of natural selection on a population is speciation, or the formation of a new species. If the population is separated geographically, behaviorally, or temporally, the 2 sub groups can adapt to different climates and gradually become so different that they can't mate anymore, so they become 2 separate species.add Natural selection may be seen in action today. The emergence of herbicide resistant plants and insecticide resistant populations of insects are well documented.It must be said, that if the new threat (herbicide/insecticide) vanished, the population may well revert to the previous form. But if the new challenge remains significant, then it becomes dominant.
What are three events that can lead to speciation?
Species (phylogenetically and genetically distinct animals from a common ancestor) form when barriers exist to prevent outbreeding. These are usually environmental (e.g. mountain ranges, oceans, climatic barriers) or biological (e.g. interbreeding of two species results in an infertile offspring).
What the difference of selection and variation?
Selection or 'Natural selection' means that the organisms that are better adapted to their environment are most likely to stay alive and produce offspring, while Variation means that during natural selection, the organism that is better adapted to the environment starts to form more physical features to help it survive (mutations). For example, Say that there was a white desert. If there were 2 mice, one species is black while the other is white, white would survive, which would be an example of Natural Selection. Variation is if, say, the mice are slow and can still be easy prey, but later on they mutate into becoming faster, that would be variation.
What is an effect of adaptive radiation?
speciation
Describe the process of evolution by natural selction?
One great example of natural selection would be turtles. Most turtles have a smooth shell all the way, without many big bumps, but some turtles in a remote location were discovered to have a hump in their shells right where the turtle's neck was. Why did this happen? This was due to natural selection. You see, the turtles that had a hump in their shell could reach much higher to get food, so they would be more likely to survive in a famine than normal turtles. The basic concept of evolution by natural selection is survival of the fittest.
