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The phenotype of organisms determines the way they interact with one another and with their environment. The way organisms interact with one another and with their environment determines how well each organism is able to compete for resources and mates - what the chances are of that organism successfully raising fertile offspring, in other words. Such offspring will likely carry the genes that give them their parent's successful phenotype. So over the generations, the genes that produce such successful phenotypes will become more numerous in the population, causing a shift in the average of phenotypes towards this successful phenotype.
What else can I help you with?
What factor besides alleles affect phenotypes?
Enviroment, development, and behavior are all factors besides alleles that can affect phenotypes.
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.
How are phenotypes and genotypes related to natural selection?
Phenotypes are the physical characteristics resulting from an individual's genotype, which is their genetic makeup. Natural selection acts on phenotypes by favoring traits that confer a reproductive advantage, leading to the increased frequency of the corresponding genotypes in a population over time. This process drives the evolution of populations by selecting for genetic variations that enhance an individual's survival and reproductive success.
Does natural selection act on genotypes?
Indirectly, yes it does. But it can only act on genotypes through their phenotypes.
When two extreme phenotypes are selected in natural selection the intermediate phenotypes become?
The intermediate phenotypes tend to be selected against, resulting in stabilizing selection that favors the extreme phenotypes. This can lead to a reduction in genetic variation within the population, as individuals with intermediate traits are less likely to survive and reproduce.
What factor besides alleles affect phenotypes?
Enviroment, development, and behavior are all factors besides alleles that can affect phenotypes.
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.
Why does natural selection work on organisms phenotypes rather than their genotypes?
This is backward, natural selection works on genotype not phenotype.
What is the type of natural selection that favors intermediate phenotypes?
When natural selection favors the intermediate version of a characteristic, it is referred to as stabilizing selection. It is the opposite of disruptive selection.
Is it true or false that a natural selection acts on phenotypes not genotypes?
It doesn't. Phenotypes are viable or not in a given environment, and this influences whether the corresponding genotypes get passed on. Selection works on genotypes via the effects of their expression, their phenotype. The answer you may be looking for is that phenotypes maladapted to their environment have less babies, and pass on less copies of their genes. "Natural selection" is the whole process over generations. "Selection" may refer to misadapted bodies/phenotypes reproducing less due to illness, hunger, bad quality territories, dying earlier, etc.
How are phenotypes and genotypes related to natural selection?
Phenotypes are the physical characteristics resulting from an individual's genotype, which is their genetic makeup. Natural selection acts on phenotypes by favoring traits that confer a reproductive advantage, leading to the increased frequency of the corresponding genotypes in a population over time. This process drives the evolution of populations by selecting for genetic variations that enhance an individual's survival and reproductive success.
The process that discriminates between phenotypes with respect to their ability to produce offspring is known as?
Natural selection
Does natural selection act on genotypes?
Indirectly, yes it does. But it can only act on genotypes through their phenotypes.
When two extreme phenotypes are selected in natural selection the intermediate phenotypes become?
The intermediate phenotypes tend to be selected against, resulting in stabilizing selection that favors the extreme phenotypes. This can lead to a reduction in genetic variation within the population, as individuals with intermediate traits are less likely to survive and reproduce.
What is Stabilizing Selection and Distruptive selection?
Stabilizing selection is a type of natural selection that favors the intermediate phenotypes in a population, leading to a decrease in genetic diversity. Disruptive selection, on the other hand, favors extreme phenotypes over intermediate ones, resulting in increased genetic variation within a population.
Why does natural selection only work on phenotypes?
Natural selection is based on the environment and on the traits of organisms. Organisms with more suitable traits are more likely to survive until reproductive age, while organisms with less suitable traits are more likely to die before they can reproduce. Most of these traits are genetic traits. The phenotype is the set of all genetic traits. Natural selection is not determined by genotypes, because genotypes are merely an organism's genetic makeup. Only the dominant or somewhat dominant alleles in the genotype will also appear in the phenotype. However, genotypes still contribute to natural selection indirectly in that two alleles in two parents' genotypes which had not appeared in their phenotypes could be inherited such that they are in the phenotype of the offspring.
Which type of natural selection occurs when the extreme opposites in a phenotype range are selected?
Disruptive selection occurs when the extreme phenotypes in a population are favored over intermediate phenotypes. This can lead to the divergence of a population into two distinct groups with different traits.
