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The trait is the same for all organisms.

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12y ago

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What requires natural selection to occur in a population?

Natural selection requires variation in traits within a population, heritability of those traits, and differential reproductive success based on those traits. Without these components, natural selection cannot act on a population.


Does natural selection have a tendency to increase or decrease genetic variation within a population?

Natural selection tends to decrease genetic variation within a population by favoring certain traits that are advantageous for survival and reproduction.


Does natural selection increase or decrease variation in a population?

Natural selection tends to decrease variation in a population by favoring certain traits that are better suited for survival and reproduction. As individuals with advantageous traits have higher fitness, their genes are passed on more frequently, reducing the frequency of less beneficial traits in the population over time.


Evolution by natural selection works best on populatin having no variation?

Evolution by natural selection actually relies on variation within a population. Without variation, there would be no genetic differences for natural selection to act upon, leading to no evolution. Variation provides the raw material for natural selection to work with, allowing beneficial traits to be favored and passed on to future generations.


Does natural selection require genetic variation in order to drive the process of evolution?

Yes, natural selection requires genetic variation to drive the process of evolution. Genetic variation provides the raw material for natural selection to act upon, leading to changes in the traits of a population over time.


Why must there be genetic variation in order for natural selection to occur?

Genetic variation is necessary for natural selection to occur because it provides different traits and characteristics within a population. These variations create diversity, allowing some individuals to have traits that are more advantageous for survival and reproduction in certain environments. Without genetic variation, there would be no differences in traits to be selected for or against, and natural selection would not be possible.


What is required for natural selection to take place?

Natural selection requires variation in traits within a population, heredity to pass on these traits to offspring, and differential reproductive success based on these traits, leading to some individuals having more offspring with the advantageous traits.


Evolution by natural selection involves what three factors?

The three key factors in evolution by natural selection are variation in traits within a population, heritability of those traits, and differential reproductive success based on those traits (adaptation). This process leads to the gradual change in the genetic makeup of a population over successive generations.


How does natural selection and variation work together to explain evolution?

Natural selection acts on the variation present in a population, favoring individuals with traits that are better suited for their environment and allowing them to survive and reproduce more successfully. Over time, these advantageous traits become more common in the population through the process of evolution, as less-fit traits are selected against.


What are the four things that must happen for natural selection to occur?

For natural selection to occur, there must be genetic variation present in a population, some of which is heritable. This variation must lead to differences in survival and reproduction (differential fitness). Individuals with advantageous traits must pass those traits on to their offspring. Over time, these advantageous traits become more common in the population.


What where the 3 steps that lead to the formation to new species according to the theory of natural selection?

Variation: Within a population, individuals have different traits. Selection: Certain traits provide individuals with a better chance of survival and reproduction. Reproduction: Individuals with beneficial traits are more likely to pass on these traits to their offspring, leading to a shift in the population's gene pool over time.


What variations do natural selection depend on?

They depend on natural variation in traits due to mutation.