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Brian Hunter
on Oct 14, 2024

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The greyhound is a dog breed known for its amazing speed. This breed was produced by taking the fastest animals and breeding them together, generation after generation. Though artificial, this is an example of __________.

A) stabilizing selection
B) disruptive selection
C) overdominance
D) directional selection
E) underdominance

Directional Selection

A form of natural selection in which one extreme phenotype is favored over other phenotypes, causing allele frequencies to shift in one direction.

Stabilizing Selection

Stabilizing selection favors individuals in the middle of the distribution of phenotypes present in a population (for example, by acting against individuals at either extreme).

Overdominance

A genetic phenomenon where the heterozygote genotype has a higher fitness or survival advantage than either of the homozygote genotypes.

  • Understand different types of selection (directional, stabilizing, disruptive) and their impacts on populations.
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Lindsay CampbellOct 18, 2024
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