Sexual Selection

One sex competes over obtaining mates, and only those with specific traits are successful.

• Male Competition

• Female Choice

• Evolution

• Species

One sex chooses mates with a specific set of features

• Female Choice

• Male Competition

• DNA Evidence

• Natural Selection

What word describes a trait that helps an organism survive in its environment?

• natural selection

• mutation

• camouflage

• adaptation

Flashy tails on many animals is an example of coloration. Why might flashy tailed animals display their colors to another of the same species? 

• make friends
• help build a nest
• attract a mate 
• scare predators

The males of a bird species do a “dance” and “sing a song” each spring. What is the main purpose of these behaviors? 

• to scare off young birds
• to imprint young birds
• to clean their feathers
• to attract female birds

Male long-tailed widow birds have elaborate tail displays. This is an example of:

• Female Choice

• Male Competition

• Natural Selection

• Artificial Selection

The picture shows a male and female pheasant. What type of selection occurred for them to have these adaptations?

• Natural Selection

• Sexual Selection - Female Choice

• Sexual Selection - Male Competition

• Random Selection

The picture shows a male and female moose. What type of selection occurred for them have these adaptions?

• Natural Selection

• Sexual Selection - Female Choice

• Sexual Selection - Male Competition

• Random Selection

The picture shows a male and female polar bear. What type of selection occurred for them to have these adaptations?

• Natural Selection

• Sexual Selection - Female Choice

• Sexual Selection - Male Competition

• Random Selection

When lions prey on a herd of antelopes, some antelopes are killed and some escape. Which part of Darwin’s concept of natural selection might be used to describe this situation?

• reproductive isolation
• descent with modification
• acquired characteristics
• survival of the fittest