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How do directional selections and stabilizing selection differ and do they tend to increase or decrease diversity?
Wiki User
∙ 14y ago
Well, Directional Selections and Stabilizing selections are different because in Directional Selection, the frequency of a particular trait moves in one direction in a range, while in Stabilizing Selection, the distribution becomes narrower, tending to "stabilize" the average by increasing the proportion of similar individual. Also, I'm not sure about this but I think the continued gene flow tends to decrease the diversity between populations.
Wiki User
∙ 14y ago
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What are the three patterns of of natural selection?
directional selection,stabilizing selection, anddisruptiveselection
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 is Stabilizing Selection and Distruptive selection?
A type of natural selection in which genetic diversity decreases as the population stabilizes on a particular trait value.
Which evolutionary force decrease the genetic diversity of a population by increasing the population of similar individuals?
stabilizing selection
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.
What are the three patterns of of natural selection?
directional selection,stabilizing selection, anddisruptiveselection
Stabilizing selection results in more or less genetic diversity?
Stabilizing selection results in less genetic diversity in a population.
What do stabilizing selection directional selection have in common?
They both decrease genetic variation .
what do stabilizing selection and direction and directional selection have in common?
They both decrease genetic variation .
The graphs of the 3 types of selection and label the average and the extremes?
There are three types of selections. The three types of selections include: disruptive selection, natural selection, and directional selection.
The curve on the left shows the height of a population of penguins. The curve on the right shows the population five years later. What has happened to this population?
Directional Selection - APEX
A population of mice lives near a stream The larger mice tend to live longer and over many generations the average mouse size gets larger What type of selection is this?
Directional selection
What is Stabilizing Selection and Distruptive selection?
A type of natural selection in which genetic diversity decreases as the population stabilizes on a particular trait value.
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 is the type of selection in which individuals at one end of the distribution curve higher fitness than individuals in the middle of at the other end?
stabilizing selection
What is the difference between directional and disruptive selection?
I'm not sure what "stabilizing directional" selection is, but if you get out a bell curve graph... Stabilizing selection tends to select for individuals around the average, or mean, of a population, which technically makes the curve steeper. Directional selection shifts the average in one direction (shifts the whole curve in one direction). Disruptive selection creates two new averages, which means it splits the one curve into two, smaller, separate curves.
Which evolutionary force decrease the genetic diversity of a population by increasing the population of similar individuals?
stabilizing selection
