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In a population that is not undergoing natural selection for a certain trait what does the phenotype distribution look like?
The distribution will center towards hetrotrophs and thus dominant phenotypes. The distribution approaches all dominant phenotypes
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In a population of horses an extreme phenotype is favored and the distribution of genes in that population shifts toward that phenotype What is the process called?
The process is called directional selection, where one extreme phenotype is favored over others in a population, resulting in a shift in the frequency of genes towards that phenotype over generations.
The graphs of the 3 types of selection and label the average and the extremes?
In stabilizing selection, the average phenotype is favored, leading to a reduction in extreme phenotypes. In directional selection, one extreme phenotype is favored, causing a shift in the average towards that extreme. In disruptive selection, both extreme phenotypes are favored over the average, leading to a bimodal distribution in the population.
What selection favors organisms with phenotypes that are at one extreme rlative to the average phenotype?
Directional selection favors organisms with phenotypes at one extreme relative to the average phenotype. This occurs when individuals with traits at one end of a spectrum have higher fitness, leading to a shift in the population towards that extreme phenotype.
What effect does stabilizing selection have on variation in a population?
Stabilizing selection reduces variation in a population by favoring the average phenotype, while selecting against extreme phenotypes. This can lead to a decrease in genetic diversity within the population as individuals with extreme traits are less likely to survive and reproduce. Over time, stabilizing selection tends to maintain a stable, intermediate phenotype.
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.
In a population of horses an extreme phenotype is favored and the distribution of genes in that population shifts toward that phenotype This process is called selection?
the process is called an DIRECTIONAL selection.
In a population of horses an extreme phenotype is favored and the distribution of genes in that population shifts toward that phenotype What is the process called?
The process is called directional selection, where one extreme phenotype is favored over others in a population, resulting in a shift in the frequency of genes towards that phenotype over generations.
What Does the phenotypic distribution look like in a population that is not undergoing natural selection for a certain trait?
The distribution will center towards hetrotrophs and thus dominant phenotypes. The distribution approaches all dominant phenotypes
What are the three ways natural selection can affect the distribution of phenotype?
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What natural selection called at extreme phenotype?
This type of natural selection is called directional selection and does not display a normal curve of expressed traits, but a heavy set of data to the left of the curve that indicates the direction of selection of the extreme phenotype.Disruptive selection is where two extreme phenotypes are maintained in a population. This curve looks like a two humped camel in it's expression of these extreme traits.
What is a common cause of stablilizing selection?
The type of selection that removes the fringe from both ends of phenotype distribution and establishing a means or average. Genetic diversity decreases and there is a stabilization on a particular trait.
The graphs of the 3 types of selection and label the average and the extremes?
In stabilizing selection, the average phenotype is favored, leading to a reduction in extreme phenotypes. In directional selection, one extreme phenotype is favored, causing a shift in the average towards that extreme. In disruptive selection, both extreme phenotypes are favored over the average, leading to a bimodal distribution in the population.
What selection favors organisms with phenotypes that are at one extreme rlative to the average phenotype?
Directional selection favors organisms with phenotypes at one extreme relative to the average phenotype. This occurs when individuals with traits at one end of a spectrum have higher fitness, leading to a shift in the population towards that extreme phenotype.
Is industrial melanism is stabilizing selection?
Industrial melanism is an example of directional selection, not stabilizing selection. In this phenomenon, environmental changes such as pollution cause a shift in the frequency of dark-colored individuals within a population, which increases their survival rates due to camouflage. Stabilizing selection, on the other hand, favors the intermediate phenotype, reducing the variation in a population.
What is the natural selection that favors one extreme?
Directional selection favors one extreme phenotype in a population, causing a shift in the distribution of traits towards that extreme. This occurs when the environment changes and one extreme trait becomes more advantageous for survival and reproduction.
What type of selection may eliminate intermediate phenotypes?
Disruptive selection can eliminate intermediate phenotypes by favoring extreme phenotypes, leading to a bimodal distribution. This selection occurs when individuals with extreme traits have a higher fitness than those with intermediate traits, resulting in the reduction of the intermediate phenotype in the population.
What is a polygenic selection?
Polygenic selection refers to the process by which multiple genes across the genome contribute to the selection of a particular trait or phenotype. This type of selection can result in a continuous distribution of phenotypic traits within a population. It is common in complex traits like height or intelligence where multiple genetic loci interact to influence the outcome.
