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Answered 2011-01-16 00:17:12

Directional selection is when natural selection favors a single phenotype.

It occurs when there is a shift in population towards an extreme version of a beneficial trait.

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What do directional selection and disruptive selection have in common-?

directional selection and disruptive selection both decrease genetic variation - apex


What type of selection is this?

directional selection


What does stabilizing selection and disruptive selection and directional selection have in common?

Natural Selection


What are the three patterns of of natural selection?

directional selection,stabilizing selection, anddisruptiveselection


What is selection where one of the extreme forms of a trait is favored?

It is directional selection.


How is disruptive selection different from directional selection?

Disruptive selection means that the most common trait is being removed from the population. In directional selection means that a population is shifting in one direction toward an extreme trait.


What is an example of directional selection?

a poisonous snake


Example of directional selection?

a poisonous snake


What does directional selection and disruptive selection have in common?

they both decrease genetic variation


What kind of natural Selection would eliminate one extreme?

Directional selection


What do stablizing selection and directional selection have in common?

They both reduce genetic variation


What do stabilizing selection and directional selection have in common?

They both decrease genetic variation .


When selection causes the frequency of a particular trair to move in one direction?

Directional Selection


What are some examples of Directional Selection?

a poisionous snake


Is industrial melanism an example of directional selection?

yes it is


Give an example of directional selection?

a poisonous snake


Explain why the evolution of resistance to antibiotics in bacteria is an example of directional natural selection?

The evolution of resistance to antibiotics in bacteria is an example of directional natural selection in the sense that the strongest strains of bacteria survive the process of natural selection.


The type of selection in which individuals at one end of a curve have the highest fitness is called?

Directional Selection


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Directional selection acts against?

One of the extremes in variation.


What are the three patterns of natural selection?

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What is name of peppered moth evolutionary change?

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What are the 3 ways natural selection can affect a population?

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What is a type of natural selection where certain species turned black from coal burning factories?

Directional selection.


What selection favors organisms with phenotypes that are at one extreme rlative to the average phenotype?

directional natural selection


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