Sexual Selection

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

• Male Competition

• Female Choice

• Evolution

• Species

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One sex chooses mates with a specific set of features

• Female Choice

• Male Competition

• DNA Evidence

• Natural Selection

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

• natural selection

• mutation

• camouflage

• adaptation

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What is sexual dimorphism?

• Mate competition

• Mate choice

• Where male animals display certain mating behaviors

• Where the different sexes have different traits

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

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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

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

• Female Choice

• Male Competition

• Natural Selection

• Artificial Selection

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Which organisms are most likely to survive?

• the best adapted
• the fastest
• the strongest
• the most domesticated (tamed)

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A bird that can easily outcompete other birds for food and that can produce many eggs has a high ___________.

• IQ
• mutation rate
• fitness
• adaptability

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Why is sexual selection important?

• Increase variation within a species

• Reduce loneliness of individuals

• Help different species mix genetic information