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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 else can I help you with?
What two factors could influence the alleles in a gene pool?
Two key factors that can influence the alleles in a gene pool are mutation and natural selection. Mutations introduce new alleles into a population, creating genetic variation. Natural selection can affect allele frequencies by favoring traits that enhance survival and reproduction, leading to an increase or decrease in certain alleles over time. Additionally, gene flow and genetic drift can also impact allele distribution within a population.
How do mutations relate to variations within a population?
Mutations contribute to genetic variation within a population by introducing new alleles. These new alleles can lead to different traits or characteristics, increasing diversity within the population. Over time, natural selection can act on this variation, influencing which traits become more or less common.
What are some reasons that the rat population is not a hardy-wienberg equilibrium?
There is gene flow between populations, mating is assortive and natural selection is taking place from the variations offered un by recombination and mutation. Thus, alleles are changing frequency in the population of rats and negating Hardy-Weinberg constraints.
Does sexual reproduction create new alleles or new combinations of alleles?
new combinations of alleles
Which is not a way in which natural selection affects the distributions of phenotypes?
Mutation is not a way in which natural selection affects the distributions of phenotypes. Mutations introduce new genetic variations, which can then be acted upon by natural selection to influence the distribution of phenotypes within a population.
What role do alleles play in natural selection?
Genes are the medium by which inherited traits are passed on to offspring. It is inherited traits, and thus genes, that receive positive or negative selection.
How could an organism end up with those two different beneficial alleles through the process of natural selection and genetic recombination?
An organism can end up with two different beneficial alleles through natural selection and genetic recombination. Natural selection favors traits that increase an organism's chances of survival and reproduction, leading to the spread of beneficial alleles in a population. Genetic recombination, which occurs during sexual reproduction, can shuffle alleles from different parents, creating new combinations of alleles that may be beneficial. Over time, these processes can result in an organism having two different beneficial alleles that enhance its fitness.
What factors change the allele frequency of a population?
Factors that can change the allele frequency of a population include natural selection, genetic drift, gene flow, mutations, and non-random mating. Natural selection favors certain alleles, genetic drift causes random changes, gene flow introduces new alleles, mutations create new variation, and non-random mating can lead to specific alleles being passed on more frequently.
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.
The new combinations of alleles produced by crossover events help to generate genetic?
diversity within a population. This genetic diversity provides the raw material for natural selection to act on, ultimately driving evolution and adaptation within a species.
Does natural selection require small population size?
No. Natural selection works in all populations. However, new alleles spread more slowly in large populations; the large size has a stabilizing effect. So one should expect large populations to change more slowly than smaller populations.
How do mutations relate to variations within a population?
Mutations contribute to genetic variation within a population by introducing new alleles. These new alleles can lead to different traits or characteristics, increasing diversity within the population. Over time, natural selection can act on this variation, influencing which traits become more or less common.
What is the formation of new species by natural selection?
We call this speciation, and is largely driven by evolution and natural selection.
How does a animal evolve?
Natural Selection (environment favours certain traits over others), genetic drift(random changes), mutations(random changes to genes, create new alleles), immigration/ emigration (introduction of foreign alleles to population) sexual selection (females favour certain traits, these males pass on genes) , speciation (formation of new species because of any of above, geographic speciation- new species-= can only breed with others from that species)
How did Darwin say that new species are formed?
That organisms were modified over time by a process called natural selection. The nonrandom survival and reproductive success of randomly varying organisms.
Does sexual reproduction create new alleles or new combinations of alleles?
new combinations of alleles
What are some reasons that the rat population is not a hardy-wienberg equilibrium?
There is gene flow between populations, mating is assortive and natural selection is taking place from the variations offered un by recombination and mutation. Thus, alleles are changing frequency in the population of rats and negating Hardy-Weinberg constraints.
