0
In selection individuals with both extreme forms of a trait are at a selective advantage?
Wiki User
โ 15y ago
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
Wiki User
โ 15y ago
Wiki User
โ 9y agoTwo extreme variations in a trait are favored in the evolutionary phenomenon of disruptive selection. This leads to rapid genetic evolution of a population.
Add your answer:
Earn +20 pts
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
Which type of natural selection occurs when the extreme opposites in a phenotype range are selected?
Disruptive selection, also known as diversifying selection.
What is the definition of stabilizing selection?
When the average, or mean of a population of organisms are selected for. The immediate environment admits of only one way a garnering resources, for instance. Thus, the extremes of the population have lesser chances of survival.
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?
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.
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 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
What tends to result in a population whose individuals have extreme traits?
Natural selection can lead to extreme traits in a population if those traits provide a significant advantage in survival or reproduction. Genetic drift can also lead to extreme traits if there are random fluctuations in the frequency of alleles in a population. Additionally, sexual selection can drive the evolution of extreme traits if individuals with those traits are preferred as mates.
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 removes individuals with average trait values creating two populations with extreme traits?
This is known as Directional Selection.
What type of natural selection could have produced birds with these two extreme types of beaks?
The description of extreme beak types suggests disruptive selection, where individuals with either extreme of the trait are favored over the intermediate forms. This could occur if there are distinct ecological niches that benefit birds with specific beak shapes. Recommended: โโโโโ://gโโแตฃโโแตขโโแตขโ.cโโ/#โffโแตฅแตขโโโbโbbโแตฃโโโ
Which kind of selection eliminates extreme phenotypes?
disruptive selection
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.
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 kind of natural Selection would eliminate one extreme?
Directional selection
What is disputive selection?
When natural selection favors extreme variations of a trait (ex. Biggest & Smallest)
Which type of natural selection occurs when the extreme opposites in a phenotype range are selected?
Disruptive selection, also known as diversifying selection.
