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What are the three patterns of of natural selection?
directional selection,stabilizing selection, anddisruptiveselection
What type of selection is this?
directional selection
The type of selection in which individuals at one end of a curve have the highest fitness is called?
Disruptive selection
Industrial melanism is an example of what selection?
directional selection: Change in environmental conditions causing one phenotype to replace another in the gene pool, change does not occur on individual basis (only on the entire species)
Is directional selection considered a random change?
Directional Selection is a more extreme form of the trait is favored. Ex. Flamingoes with longer legs and necks. Punctuated Equilibrium is sudden changes, then long periods without change- may be a combination of both.
What are the three patterns of of natural selection?
directional selection,stabilizing selection, anddisruptiveselection
What type of selection is this?
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
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
When individuals at only one end of a bell shaped curve of phenotype frequencies have high fitness the results is?
Directional Selection.
What kind of natural Selection would eliminate one extreme?
Directional selection
What do stabilizing selection 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 do stabilizing selection and direction and directional selection have in common?
They both decrease genetic variation .
Give an example of directional selection?
a poisonous snake
Where did the peppered moth population adapt?
Directional Selection
The type of selection in which individuals at one end of a curve have the highest fitness is called?
Disruptive selection
