Courtship behaviour

• What is the purpose of courtship behavior in organisms of the same species?

  Successful mating
• Courtship behavior helps organisms recognize that they are members of the same species
• Why is courtship behavior essential for the survival of a species?

  To pass on DNA
• Courtship behavior is primarily for the survival of individual organisms.

  False
• Courtship rituals involve unique sequences of actions
• Which sex typically performs courtship rituals in the animal kingdom?

  Males
• Male courtship rituals often involve brightly colored feathers to attract females.
• Courtship rituals may involve the release of chemicals called pheromones
• What is one example of a courtship behavior involving pheromones?

  Attracting the opposite sex
• Females choose mates based on the quality of their courtship ritual
• Why do females often have limited mating opportunities during the breeding season?

  Limited egg supply
• Courtship behavior helps synchronize mating behavior to ensure successful reproduction.
• Successful reproduction requires that both the male and female are sexually mature and in season
• What is the secondary purpose of courtship behavior in some species, such as penguins?

  Forming a pair bond
• Courtship behavior is genetically determined, indicating evolutionary relationships between species.
• The more similar the courtship sequence between two species, the more closely related their DNA
• How can scientists use courtship rituals to study evolutionary relationships between species?

  By comparing sequences
• Steps in the courtship sequence of three duck species to determine relatedness

  1️⃣ Duck 1 shakes tail

  2️⃣ Duck 2 shakes tail

  3️⃣ Duck 3 whistles
• Which two duck species in the example are most closely related based on their courtship behavior?

  Duck 1 and Duck 2