Sexual selection and mating systems
8 important questions on Sexual selection and mating systems
What can you tell me about SEXUAL SELECTION?
-> when the males and females of any animal have the same general habits of life, but differ in structure, colour, or ornament
-> sexual selection is divided into: intersexual selection + intrasexual selection
What can you tell me about INTERSEXUAL SELECTION?
-> favours traits that make an individual more attractive to the other sex
What can you tell me about INTRASEXUAL SELECTION?
-> favours traits that make you a better competitor for mates compared to others of your own sex
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What can you tell me about MATING SYSTEMS?
-> they depend on biology, interest, social constraints and environmental constraints
-> 2 types: monogamy + polygamy
What is the definition of SERIAL MONOGAMY?
-> males can produce more offspring this way
-> females can increase the genetic variation in the offspring
What are the 3 trade-offs of care?
2. Care vs more offspring -> animals have a finite amount of energy or effort they can expand on reproduction - allocating it to caring for offspring will lead to producing fewer offspring overall
3. Care vs future offspring -> more care now may mean you have. Fewer resources (energy) for future offspring
What is the definition of sexual conflict?
meaninng they will always prefer theri partner to take on a greater sharer of the costs of care
What are the 3 reasons female chooses a certain mate?
-> male has provisioning ability / access to breeding site / access to foraging sites / nuptial gift
2. Indirect benefit -> genetically based
-> healthier offspring / more attractive offspring / genetic compatibility
3. Sensorry bias -> mate choice based on a preference evolved in a non-mating context
The question on the page originate from the summary of the following study material:
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- Never study anything twice again
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