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In a population the number of indivuals possessing a beneficial mutation may increase as a result of?
Natural selection
Are new alleles made by natural selection?
No - natural selection does not create new alleles. Variation in alleles needs to exist in the population in order for natural selection to occur. Natural selection will involve the change in allele frequencies over time, but it does not create new alleles. New alleles are the result of mutations.
What is the similarity between natural selection and genetic drift?
No. Genetic mutations lead to changes in the gene. This results in a (possible) new allele. Genetic drift is the change in frequency of an allele in the population due to chance. The smaller the population the bigger the chance on genetic drift (like it is more likely to coin flip 10 heads in a row then 1000 heads) while on the other hand the bigger the population the bigger the chance new alleles will be created by mutations.
Why is a dandelion an example of natural selection?
All modern lifeforms are examples of natural selection, since they are all the result of it.
How does natural selection help to change organisms overtime?
Natural selection varies the death rates of individuals in the current generation. As the next generation is born with different traits derived from parents that were survivors of the current generation, the population changes gradually from generation to generation better able to survive longer against the natural selection pressures. Should selection pressures change in the future (and they very likely will) the direction of changes caused by natural selection will also change (with a corresponding but temporary increase in death rates if the change is large and sudden).
Is natural selection a process or a result of a process?
Natural selection is only the result of changing environments, mutation and the variation resulting therein. Natural selection is the process of adaptive change and the main mechanism of evolution that leads to speciation. Natural selection is a process as mutation and variation are grist to the mill of natural selection.
In a population the number of indivuals possessing a beneficial mutation may increase as a result of?
Natural selection
What process behavior patterns to change over generations as a result of reproductive success?
change through natural selection
What process causes behavior to change over generations as a result of reproductive success?
change through natural selection
Is natural selection a cause of evolution?
No, natural selection is believed to result in evolution.
What process causes behavior pattern to change over generations as a result of reproductive success?
change through natural selection
Are new alleles made by natural selection?
No - natural selection does not create new alleles. Variation in alleles needs to exist in the population in order for natural selection to occur. Natural selection will involve the change in allele frequencies over time, but it does not create new alleles. New alleles are the result of mutations.
How could natural selection result in a change to relative numbers of solid and striped fish?
100/50
Which process causes behavior patterns to change over generations as a result of reproductive success?
Natural selection is the process that causes behavior patterns to change over generations as a result of differential reproductive success. Organisms with traits better suited to their environment are more likely to survive and reproduce, passing on those beneficial traits to their offspring. Over time, this process leads to the accumulation of advantageous behaviors in a population.
Which situation would most likely result in evolution?
A significant change in the environment that exerts selective pressure on a population, leading to favored traits being passed on to future generations through natural selection.
Why is adaptation essential to understanding natural selection?
Because adaptation is the directly visible result of natural selection.
Variation exists within the genes of every population or species as the result of what?
Variation exists within the genes of every population or species as the result of natural selection. The other reason is due to neutrality of mutations.
