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HomeHomework HelpbiologyDisruptive Selection

Disruptive Selection

Disruptive selection is a type of natural selection that favors extreme phenotypes over intermediate phenotypes within a population, leading to increased variation and potentially the emergence of distinct subgroups. This process can result in the diversification of species when environmental conditions favor multiple adaptations.

intermediate
2 hours
Biology
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Overview

Disruptive selection is a fascinating mechanism of evolution that promotes diversity within populations by favoring extreme traits. This process can lead to the emergence of new species as organisms adapt to different ecological niches. By understanding disruptive selection, we gain insights into th...

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Key Terms

Natural Selection
The process where organisms better adapted to their environment tend to survive and produce more offspring.

Example: The peppered moth changing color during the Industrial Revolution.

Phenotype
The observable physical or biochemical characteristics of an organism.

Example: Flower color in plants.

Genotype
The genetic constitution of an individual organism.

Example: The alleles for flower color in a plant.

Speciation
The formation of new and distinct species in the course of evolution.

Example: Darwin's finches evolving into different species.

Adaptive Evolution
Changes in a population that enhance survival and reproduction in a specific environment.

Example: Antibiotic resistance in bacteria.

Stabilizing Selection
A type of natural selection that favors average traits and reduces variation.

Example: Human birth weight.

Related Topics

Directional Selection
A type of natural selection that favors one extreme phenotype over others, leading to a shift in the population's traits.
intermediate
Stabilizing Selection
A selection process that favors average traits, reducing variation in a population.
intermediate
Genetic Drift
Random changes in allele frequencies that can significantly impact small populations.
advanced
Adaptive Radiation
The rapid evolution of diversely adapted species from a common ancestor.
advanced

Key Concepts

Natural SelectionPhenotypic VariationPopulation GeneticsAdaptive Evolution