Wadesworld Evolution Vocab/Terms Quiz#2

Based on variation in secondary sexual characteristics related to competing for and attracting mates. ex. peacocks

• Stabilizing Selection
• Disruptive Selection
• Directional Selection
• Sexual Selection
• Artificial Selection

Increases the extreme types in population at the expense of intermediate form. What may result is called balanced polymorphism, one population divided into two distinct species.

• Stabilizing Selection
• Disruptive Selection
• Directional Selection
• Sexual Selection
• Artificial Selection

What type of graph is this?? Eliminates the extremes and favors the more common intermediate forms. Many mutant forms are weeded out in this way

• Stabilizing Selection
• Disruptive Selection
• Directional Selection
• Sexual Selection
• Artificial Selection

Humans breed plants and animals by seeking individuals with desired traits as breeding stock.

• Stabilizing Selection
• Disruptive Selection
• Directional Selection
• Sexual Selection
• Artificial Selection

The 2n condition, maintains and shelters a hidden pool of alleles that may not be suitable for present conditions but that could be advantageous when conditions change.

• Diploidy
• Balanced Polymorphism
• Geographic Variation
• Sexual Reproduction
• Outbreeding

Ex. warning coloration in aposematic species. Preserves variety in a population, acts to decrease the frequency of the more common phenotypes and increase the the frequency of the less common ones.

• Frequency-Dependent Selection
• Balanced Polymorphism
• Geographic Variation
• Sexual Reproduction
• Outbreeding

Matting of organisms within one species that are not closely related.

• Outbreeding
• Balanced Polymorphism
• Geographic Variation
• Sexual Reproduction
• Diploidy

The situation in which two different versions of a gene are maintained in a population of organisms because individuals carrying both versions are better off than those who have two copies of either version alone.

• Balanced Polymorphism
• Geographic Variation
• Sexual Reproduction
• Outbreeding
• Diploidy

Traits that seem to have no selective value. Ex; blood type, fingerprint variation in humans.

• Evolutionary Neutral Traits
• Balanced Polymorphism
• Geographic Variation
• Sexual Reproduction
• Outbreeding

Differences among populations in genetically based traits across the natural geographic range of a species.

• Geographic Variation
• Balanced Polymorphism
• Sexual Reproduction
• Outbreeding
• Diploidy