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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?
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∙ 15y ago
directional selection
Wiki User
∙ 15y ago
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The mode of natural selection in which both extremes in the range of a phenotype are favored is termed?
That would be disruptive selection.
In selection individuals with both extreme forms of a trait are at a selective advantage?
There are three patterns of natural selection. 1) Disruptive selection: this is when the two extreme forms of a trait are selected for and intermediate forms are selected against. For example plants which can tolerate heavy metal ions are at an advantage on old spoil tips, whereas those which cannot tolerate these ions are at an advantage on uncontaminatied soil. 2) Stabilizing selection: this is when the intermediat forms are selected for and the extreme forms are selected against. A classic example is birth weight in humans. Babies which are much heavier or much lighter than average are more likely to die than average weight babies. 3) Directional selection:this is when one extreme is selected for and the other extreme is selected against. For example in Darwin's finches on the Galapagos Islands, during a drought larger birds with larger beaks are favoured over smaller birds with smaller beaks. See: http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/E/Evolution.html http://www.evotutor.org/Selection/Sl5A.html
Name of the keencap?
The patella. Sorry, the ptaella, headgear favored by ancient Egyptians.
What resulted from a genetic variation that was favored by natural selection?
the long neck of a giraffe
Which of the following resulted from a genetic variation that was favored by natural selection?
The Long Neck of a Giraffe .
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
The two different extreme variations in a trait are favored in?
The two extreme variations in a are trait are favored in disruptive selection.
The two different extreme variation in a trait are favored in?
disruptive selection.
What is a shortage of farmland unequal distribution of farmland and favored treatment of the wealthy?
Armed conflict
The mode of natural selection in which both extremes in the range of a phenotype are favored is termed?
That would be disruptive selection.
Are all different types of traits the result of adaptation.explain?
No. You are describing what is called Lamarckism. Different traits are the results of the alleles found in genes. The environment does push one trait over another if the environment becomes extreme. You will see many traits in a population (such as in a human population) but one is not favored unless that trait allows those that have it to do better.
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.
What states favored the New Jersey plan?
Smaller States favored the New Jersy Plan. Mostly the northen, small population states such as New Jersey, New York, Conneticut, Massachusetts, and Rhode Island favored it because it gave them a fair vote.
How do you spell population?
The likely word is the adjective "popular" (well-liked or favored, or contemporary).
What percentage of the population feels marijuana should be legalized?
44%, from the 70s to the 90s only 25% favored legalization
Compare and contrast stabilizing directional and disruptive selection?
Stabilizing selection is where a population is favored by just the right amount of a certain trait, and if they don't have the right amount of that certain trait then they die. Example: Human babies and birth weight, if the baby is too small, i gets sick. If the baby is too big, it cannot get through the pelvis; but just the right weight and it will come out lively and well. Disruptive selection is when an animal has to fit in with its environment; I.E., camouflage.
