Why does the response to selection often level off after many generations of selection?

Sexual and Ecological selection often oppose each other: give 2 examples

What are the characteristics of mate preference in sexual selection?

What type of selection reduces genetic variation in a trait? disruptive? balancing? directional? stabilizing?   Explain why

According to Hamilton's Rule, in which scenario is selection for cooperative breeding expected to be the strongest? but lose the chance to have Helpers raise and increase the survival and reproduction of of their own offspring. O 100 additional 2nd cousins twice removed to whom they are 0.00781 (0.781%) genetically related; 2 of their own offspring. 60 additional 1st cousins once-removed to whom they are 0.0625 (6.25%) genetically related; 1 of their own offspring. O 50 additional grandnieces/nephews to whom they are 0.125 (12.5%) genetically related; 2 of their own offspring. None of the three scenarios are likely to result in the evolution of cooperative breeding according to Hamilton's Rule.

Two males are fighting for territory that will increase the probability of mating success. Which term best describes this activity? O Intrasexual selection Intersexual selection Artificial selection O Mutation

Becca loves German Shepherds and wants to have one as a pet. She locates a breeder and agrees to purchase one of the puppies. Which type of selection occurs from this type of human intervention?         directional selection         stabilizing selection         disruptive selection         artificial selection

How can structural racism prevent optimal health for all?