This is for Biology students to give their opinion on current events in the field of Biology.
Monday, April 28, 2008
Selections
What are the differences between stabilizing, directional, and disruptive selection? Also can you give me an example of these types of selections using animals in this area.
Stabilizing Selection is when natural selection favors average individuals in a population. An example is that some spiders are average size and they thrive in some environments. Directional Selection occurs when natural selection favors one of the extreme variations of a trait. An example only woodpeckers with long beaks can get insects that are far inside a tree because the insects live there. Disriputive Selection is when individuals with either extreme of a trait's variation are selected for. An example is when dark colored dolphins blend in with dark colored rocks and light colored dolphins blend in with light colored rocks.
Directional is when natural selection favors one variation. Stabilizing selection is when it favors individuals. Disruptive is when extremes are selected. An example would spiders and other insects.
it is when natural selection favors average individuals in a population. spiders are average and they can survive. directional selection is when natural selection favors one of the extreme variations of a trait. woodpecker have lond beaks get insects in trees. disruptive selection is when they favor both traits, like a dark colored animals that blends with its environent.
The directional kind is when natural selection favors one variation. Disruptive is when the extremes of it are selected. Stabilizing selection is when the individuals are favored. Insects are examples of these.
The directional kind is when natural selection favors one variation. Disruptive is when the extremes of it are selected. Stabilizing selection is when the individuals are favored. Insects are examples of these.
directional is when the diferent trates thrive. and stabilizing selection is when the normal ones live better. it all depends on what the conditions are.
Stabalizing Selection is when natural selction chooses the favorable average population over the adapted population. Directional Selection is when natual selection favors an extreme adaptation of a trait. Disriputive Selection is when individuals with either the extreme of a trait or a variation are selected due to their environment and its factors.
Disruptive selection is when the extremes are selected, an example could be that the lighter dolphins blend more in with the water and bottom of the oceans. Directional selectiction is when one variation is favored of natural selection an example of this would be a wood pecker with a long beak, that have an easier time picking up insects. Stabilizing selection is when it favors average individuals in natural selection, an example of this would be just a normal size fly.
Stabilizing selection is natural selection that favors average individuals in a population. An example is that some spiders are average size, some are larger than average, and some are smaller than average. The larger ones will be eaten by birds and the smaller wouldnt be able to find food, so the average sized spiders will live longer.
Directional selection occurs when natural selection favors one of the extreme variations of a trait. Woodpeckers eat insects from the trees. If some insects live in the deep tissue of the tree then the woodpeckers with longer beaks will live longer than shorter beak woodpeckers.
Disruptive selection is when individuals with either extreme of a trait's variation are selected for. Limpets when the grow up they attach themselves on the sides of rocks. The white limpets match with the white rocks and the dark limpets match with the dark rocks. But then the tan limpets dont match with either the white or dark rocks so they get eaten by the birds.
9 comments:
Stabilizing Selection is when natural selection favors average individuals in a population. An example is that some spiders are average size and they thrive in some environments. Directional Selection occurs when natural selection favors one of the extreme variations of a trait. An example only woodpeckers with long beaks can get insects that are far inside a tree because the insects live there. Disriputive Selection is when individuals with either extreme of a trait's variation are selected for. An example is when dark colored dolphins blend in with dark colored rocks and light colored dolphins blend in with light colored rocks.
Directional is when natural selection favors one variation. Stabilizing selection is when it favors individuals. Disruptive is when extremes are selected. An example would spiders and other insects.
it is when natural selection favors average individuals in a population. spiders are average and they can survive. directional selection is when natural selection favors one of the extreme variations of a trait. woodpecker have lond beaks get insects in trees. disruptive selection is when they favor both traits, like a dark colored animals that blends with its environent.
The directional kind is when natural selection favors one variation. Disruptive is when the extremes of it are selected. Stabilizing selection is when the individuals are favored. Insects are examples of these.
The directional kind is when natural selection favors one variation. Disruptive is when the extremes of it are selected. Stabilizing selection is when the individuals are favored. Insects are examples of these.
directional is when the diferent trates thrive. and stabilizing selection is when the normal ones live better. it all depends on what the conditions are.
Stabalizing Selection is when natural selction chooses the favorable average population over the adapted population. Directional Selection is when natual selection favors an extreme adaptation of a trait. Disriputive Selection is when individuals with either the extreme of a trait or a variation are selected due to their environment and its factors.
Disruptive selection is when the extremes are selected, an example could be that the lighter dolphins blend more in with the water and bottom of the oceans. Directional selectiction is when one variation is favored of natural selection an example of this would be a wood pecker with a long beak, that have an easier time picking up insects. Stabilizing selection is when it favors average individuals in natural selection, an example of this would be just a normal size fly.
Stabilizing selection is natural selection that favors average individuals in a population. An example is that some spiders are average size, some are larger than average, and some are smaller than average. The larger ones will be eaten by birds and the smaller wouldnt be able to find food, so the average sized spiders will live longer.
Directional selection occurs when natural selection favors one of the extreme variations of a trait. Woodpeckers eat insects from the trees. If some insects live in the deep tissue of the tree then the woodpeckers with longer beaks will live longer than shorter beak woodpeckers.
Disruptive selection is when individuals with either extreme of a trait's variation are selected for. Limpets when the grow up they attach themselves on the sides of rocks. The white limpets match with the white rocks and the dark limpets match with the dark rocks. But then the tan limpets dont match with either the white or dark rocks so they get eaten by the birds.
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