Final answer:
The response explains various types of natural selection, including macroevolution, speciation, and the effects of directional, stabilizing, and disruptive selection on species diversity. Each type is illustrated with clear examples that highlight changes in trait occurrences and species evolution. Understanding these concepts is fundamental in population biology.
Explanation:
Types of Natural Selection
Natural selection can be categorized into different types based on how it affects species and their traits. Below is a clear identification of each type based on the scenarios provided:
- Results in the evolution of the species: This indicates Macroevolution, which often arises from gradual changes over long periods.
- Results in new species: This is indicative of Speciation, a process where new species arise, often due to reproductive isolation.
- Favors traits at the two extremes: This describes Disruptive Selection, where individuals with extreme phenotypes experience higher fitness than those with average traits.
- No increase in diversity: This is associated with Stabilizing Selection, which favors intermediate traits, reducing variation.
- One extreme trait is favored: This is characteristic of Directional Selection, where selection is pushed towards one extreme of a trait spectrum.
- Diversity decreases: This occurs with Stabilizing Selection, which reduces variation among the population as it promotes the average traits.
- Diversity increases: Here, Disruptive Selection is at play, as it encourages variation, generating more diverse traits within the population.
Learn more about Natural Selection here:
https://brainly.com/question/4075522