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By selecting the variant organism most suited to the environment the alleles of the population then change in frequency over time and thus evolution occurs.
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What allows natural selection and evolution to occur for a tree?
differences in the characteristics of individual trees
What allows natural selection and evolution to occur?
the unequal ability of individuals to survive and reproduce
What is a requirement for evolutionary changes to occur through natural selection?
Evolution occurs through natural selection via survival of the fittest. This means that those organisms that are most well adapted to the environment will survive and pass on their genes.
What four factors can cause evolution to occur?
1.) Mutation 2.) Selection 3.) Gene Flow 4.) Genetic Drift
Why does evolution evolution by natural selection can not occur if the variation in a characteristic does not contribute to differences in fitness?
Differential selection is just that, differential. Some variation is marginally superior to another variation us fitness difference, so the key is to have variation. Then natural selection will " see " this slight variation and select the better adapted trait against the background of the immediate environment.
What allows natural selection and evolution to occur?
the unequal ability of individuals to survive and reproduce
What allows natural selection and evolution to occur for a tree?
differences in the characteristics of individual trees
What are the 4 mechanisms by which evolution can occur?
genetic drift, mutation, natural selection, and migration
How does natural selection provide a mechanism for evolution to occur?
by having sexual intercourse with hoes and getting money
What are three reasons for natural selection to occur?
1. different breeding 2. evolution 3.adaptation
Generally evolution by natural selection occurs quite slowly over?
Evolution through natural selection occurs slowly over millions of years. It has been hypothesized that evolution is the result of positive mutations that occur in a community of organisms that help them survive better. Evolution is essentially descent with modification.
Why is Lamark not called the father of Evolution?
Because it was Darwin who made it a scientifically plausible explanation, by providing a mechanism by which evolution could occur....Natural Selection.
What characteristic within populations cause natural selection to occur?
Genetic variation. If there were no variation in the genes/phenotype then natural selection would have nothing to select from.
Can someone help you compare and contrast natural selection and evolution any help would be great?
Evolution is simply genetic change within a poulation. That change can occur in several ways. One is immigration/emigration: individuals moving in or out of a population bring in or take out their alleles with them. Another is genetic drift, or chance events which cause the frequencies of alleles in a population to fluctuate. New mutations can change the allelic frequency as well. Finally, natural selection can cause some alleles to become more common at the expense of others. In short, natural selection is one of several mechanisms that can bring about evolution.
6 Explain why evolution by natural selection can not occur if the variation in a characteristic does not contribute to differences in fitness?
If there is not reproductive fitness conveyed by a variant trait, then natural selection has nothing to select and nothing to promote into the populational gene pool.
What is a requirement for evolutionary changes to occur through natural selection?
Evolution occurs through natural selection via survival of the fittest. This means that those organisms that are most well adapted to the environment will survive and pass on their genes.
In the book The Origin of Species does evolution occur by means of natural selection?
Yes, that is what Darwin thought. However this has never been shown to be true.
