Sexual selection Notes Review

______________ is the tendency of beneficial traits to increase in frequency (be “selected”) in a population in response to their environment

• Natural Selection

• Evolution

• Sexual Selection

• Genetics

• Survival

____________ is a special case of natural selection in which the sexually selected traits (differences in behavior or coloration etc.) become more common over time even if it is harmful to the survival of the organism.

• Natural Selection

• Evolution

• Sexual Selection

• Genetics

• Survival

Organisms have ___________ reproductive success

• the same

• different

Increased ability to _____________ is not the only driving force behind natural selection

• survive

• die

Differential survival is not enough to drive population __________ over time

• change

• stabilization

___________________ is what determines traits that are passed on to future generations

• Reproductive success

• An adaptation

• Speciation

• An advantageous trait

Why do we see bright colors in the sex of just one organism in some animals?

• In order to attract a mate and reproduce

• to scare off possible unwanted mates

• To blend in with their environment

• Because these animals are herbivores that eat bright colored food

Which of the following is not an example of sexual selection?

• The brightly colored feathers of male peacocks

• Various birds that perform mating dances

• The colors of some organisms that let them blend in with their environment (camouflage)

• Big horns or antlers on some organisms

• The bright colors of male guppies