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Natural selection will never favor those members of a population that have an extreme variation of a trait?
Wiki User
∙ 13y ago
False my friend
Wiki User
∙ 13y ago
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What is natural selection that acts against one type of extreme form of a polyygenic trait to reduce genetic variation and change the average value of a trait within a population called?
directional selection
Tends to favor phenotypes at one extreme of the range of variation?
DIRECTIONAL Selection
What is disputive selection?
When natural selection favors extreme variations of a trait (ex. Biggest & Smallest)
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.
What 3 types of Selection pressures that affect a population structure?
The 3 types of selection pressure on a population: 1) "Stabilizing selection" = intermediate phenotypes are favored and extremes on both ends are eliminated. 2)"Directional selection" = is a mode of natural selection in which a single phenotype is favored, causing the allele frequency to continuously shift in one direction. 3) "Disruptive selection/ Diversifying selection" = describes changes in population genetics in which extreme values for a trait are favored over intermediate values
What is natural selection that acts against one type of extreme form of a polyygenic trait to reduce genetic variation and change the average value of a trait within a population called?
directional selection
What selection favors organisms with phenotypes that are at one extreme rlative to the average phenotype?
Tends to result in a population whose individuals have extreme traits is what? ----> it is directional selection
Directional selection tends to eliminate?
organisms on one extreme of the population have a better chance to survive than do those on the other extreme.
Which force of evolution makes a population more alike?
Stabilizing selection occurs when the extreme forms of some trait are selected against by natural selection. It is a force of natural selection which causes evolution (definition: change of allele frequency in a population divided by time).
The two different extreme variation in a trait are favored in?
disruptive selection.
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.
Stabilizing selection is categorically good for a population because it?
I do not know if I would say " catagorically good ", but stabilizing selection does eliminate the extreme morphologies in a population of organisms. Remember the taget of selection is the individual ( gene ) and the population evolves. So, saying something that is the result of natural selection is " good " for the population is rather confused as individuals are selected. So, extreme morphologies could be " good " for a population depending on the immediate environment.
Selection favors one extreme form of a trait in a population.?
Tends to result in a population whose individuals have extreme traits is what? ----> it is directional selection
What kind of natural Selection would eliminate one extreme?
Directional selection
Tends to favor phenotypes at one extreme of the range of variation?
DIRECTIONAL Selection
What is disputive selection?
When natural selection favors extreme variations of a trait (ex. Biggest & Smallest)
Which type of natural selection favors the average individual in a population?
That would be the Stabilizing Selection where there will me not a lot of genetic variation. The curve of the population allele frequency would be quite thin with the extreme being in the middle.
