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The characteristic within the population that causes natural selection to occur is that individuals within a given population are not all identical because they vary. The other characteristic that causes natural selection to occur is that some variants are better than the others.
The variations in populations. Each organisms has varying degrees of survivability and reproductive success and the first job of natural selection, winnowing, is this choosing among the variants.
There are four requirements for natural selection to occur: 1. There is variation in a trait. 2. At least some of the variation in heritable. 3. That variation contributes to differential reproductive success. 4. More individuals are born than survive and reproduce.
Variation within populations causes a natural selection of individual organisms for their, ultimately, reproductive success.
Genetic variation
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Natural selection causes changes in populations of organisms not individual organisms because?
differential reproductive success caused by genetic variation is necessary for the process of natural selection.
Adaptation which allows for natural selection is called?
Adaptation does not allow for natural selection: natural selection causes adaptation.
Which of the following are true of natural selection?
An organism with a charecteristic that is more helpful to its survival will be more likely to survive and breed than one without that characteristic.
What causes the allele frequencies to changes?
1. Mutation 2. Migration (Gene Flow): both immigration and emigration. 3. Genetic Drift 4. Sexual Selection (Non-random mating) 5. Natural Selection: those most fit survive to pass on their genes to the next generation.
Why is variation important for natural selection and what are the main sources of this variation?
Without variation natural selection would have nothing to select from that would confer survivability and reproductive success. on the organisms being selected against the organisms conspecifics and the immediate environment. Mutation and sexual recombination provide the main sources of this variation that is needed to make selection work. Mutation is the variation presented that causes the real adaptive change that can lead to speciation.
What characteristic within populations causes natural to occur?
genetic variation
What characteristic within populations causes natural selectio?
Variation in traits within populations is the characteristic that causes natural selection. This variation could be due to genetic differences or environmental factors, and individuals with traits that are better adapted to their environment are more likely to survive and pass on their genes to the next generation. Over time, this process leads to the evolution of populations as adaptations become more common.
What causes populations to complete?
Compete? The need to be a moron. Complete? The lack of natural selection.
Natural selection causes changes in populations of organisms not individual organisms because?
differential reproductive success caused by genetic variation is necessary for the process of natural selection.
What characteristic within populations causes natral selection to occur?
Variation within populations, caused by genetic differences, mutations, or environmental factors, is what leads to natural selection. Individuals with advantageous variations that increase their chances of survival and reproduction are more likely to pass on their genes to the next generation, leading to changes in the population over time.
Is natural selection a form of adaptation?
Natural selection is what causes adaptation.
Adaptation which allows for natural selection is called?
Adaptation does not allow for natural selection: natural selection causes adaptation.
Which of the following are true of natural selection?
An organism with a charecteristic that is more helpful to its survival will be more likely to survive and breed than one without that characteristic.
Is adaptation a cause of natural selection?
No, it's exactly the other way around: natural selection causes adaptation.
What process causes adaptations to evolve?
Natural selection
what causes natural selection to occur?
the presence of predators
What factor of natural selection causes competition?
Overproduction
