Question

Exercise: Terms of Sexual Selection Instruction: Connect each term against its appropriate description through a line to match. Drag a line from each term on the left side to the corresponding description on the right side. Alternative mating strategies Selection that acts directly on a locus. Direct benefit A difference in the ability of an organism to perceive different stimuli (e.g., low vs high frequency sounds). Direct selection The gonads and closely associated structures that distinguish males and females. Fisher's runaway Different mating behaviors and morphologies that are maintained as a stable polymorphism by negative frequency-dependent selection. Good genes A fitness increment accrued by an individual by performing an action or receiving the action. Male combat A term used for a mechanism that may cause the evolution of mating preferences for extreme mating displays. Perceptual bias (sensory bias) A process in which a mating preference and a sexual display become very rapidly exaggerated as the result of a genetic correlation that develops between them. Primary sexual trait Direct physical contest between males that may result in sexual selection.

Answer 1

1. Alternative mating strategies - Different mating behaviors and morphologies that are maintained as a stable polymorphism by negative frequency-dependent selection.

2. Direct benefit - A fitness increment accrued by an individual by performing an action or receiving the action.

3. Direct selection - Selection that acts directly on a locus.

4. Fisher's runaway - A process in which mating preference and a sexual display becomes very rapidly exaggerated as the result of a genetic correlation that develops between them

5. Good genes - A term used for a mechanism that may cause the evolution of mating preferences for extreme mating displays.

6. Male combat - Direct physical contest between males that may result in sexual selection.

7. Perceptual bias - A difference in the ability of an organism to perceive different stimuli.

8. Primary sexual trait - The gonads and closely associated structures that distinguish males and females.