Podcast
Questions and Answers
In Bateman's principle, which sex is considered the limiting factor of parental investment?
In Bateman's principle, which sex is considered the limiting factor of parental investment?
Which reproductive factor primarily limits male reproductive success?
Which reproductive factor primarily limits male reproductive success?
What is the term used to describe the difference in size between male and female gametes?
What is the term used to describe the difference in size between male and female gametes?
Which mating system involves females having multiple male mates?
Which mating system involves females having multiple male mates?
Signup and view all the answers
What is the primary implication of females being the limiting factor of parental investment?
What is the primary implication of females being the limiting factor of parental investment?
Signup and view all the answers
What is a key characteristic of polyandry in the context of harem polyandry and 'sex role reversal'?
What is a key characteristic of polyandry in the context of harem polyandry and 'sex role reversal'?
Signup and view all the answers
In polyandry species like Saddleback Tamarins, what determines a female's reproductive success?
In polyandry species like Saddleback Tamarins, what determines a female's reproductive success?
Signup and view all the answers
Why is polyandry favored as a mating system according to the text?
Why is polyandry favored as a mating system according to the text?
Signup and view all the answers
What happens to both male and female reproductive success in wild Saddle-back Tamarins if they don't have nonreproductive helpers?
What happens to both male and female reproductive success in wild Saddle-back Tamarins if they don't have nonreproductive helpers?
Signup and view all the answers
Which statement best describes the concept of sexual dimorphism in the context of polyandry?
Which statement best describes the concept of sexual dimorphism in the context of polyandry?
Signup and view all the answers
In lekking polygyny, what is the primary driver of male competition within the lek?
In lekking polygyny, what is the primary driver of male competition within the lek?
Signup and view all the answers
According to Bateman's principle, which sex is expected to optimize the quality of their gametic contribution?
According to Bateman's principle, which sex is expected to optimize the quality of their gametic contribution?
Signup and view all the answers
Which of the following statements best describes female choice in lekking polygyny?
Which of the following statements best describes female choice in lekking polygyny?
Signup and view all the answers
In species exhibiting lekking polygyny, which sex is expected to have higher variability in reproductive success?
In species exhibiting lekking polygyny, which sex is expected to have higher variability in reproductive success?
Signup and view all the answers
According to Bateman's principle, what is the primary selective pressure on males in terms of reproductive success?
According to Bateman's principle, what is the primary selective pressure on males in terms of reproductive success?
Signup and view all the answers
What type of mating system is typically favored when chicks can care for themselves early?
What type of mating system is typically favored when chicks can care for themselves early?
Signup and view all the answers
How does certainty of paternity influence parental care and mating behavior?
How does certainty of paternity influence parental care and mating behavior?
Signup and view all the answers
In species with internal fertilization, what phenomenon is discussed due to the uncertainty of paternity?
In species with internal fertilization, what phenomenon is discussed due to the uncertainty of paternity?
Signup and view all the answers
Why is male parental care rare in mammals despite being typically polygynous?
Why is male parental care rare in mammals despite being typically polygynous?
Signup and view all the answers
Why is male parental care often essential in bird species?
Why is male parental care often essential in bird species?
Signup and view all the answers
What is the term used to describe the mating system where one male mates with many females, usually more showy and larger than the males?
What is the term used to describe the mating system where one male mates with many females, usually more showy and larger than the males?
Signup and view all the answers
In a leking polygyny system, what is the primary mechanism by which males compete for mates?
In a leking polygyny system, what is the primary mechanism by which males compete for mates?
Signup and view all the answers
What type of sexual selection refers to an organism's ability to successfully copulate with a mate?
What type of sexual selection refers to an organism's ability to successfully copulate with a mate?
Signup and view all the answers
Which mating system is characterized by one female mating with many males, often with the males being more showy than the females?
Which mating system is characterized by one female mating with many males, often with the males being more showy than the females?
Signup and view all the answers
What type of male competition is typically associated with the polygynous mating system?
What type of male competition is typically associated with the polygynous mating system?
Signup and view all the answers
Why do cooperatively polyandrous groups involve two or more females mating with a single male?
Why do cooperatively polyandrous groups involve two or more females mating with a single male?
Signup and view all the answers
Which process is responsible for most sexual dimorphism in species?
Which process is responsible for most sexual dimorphism in species?
Signup and view all the answers
In species where females produce more eggs, what tends to favor larger females?
In species where females produce more eggs, what tends to favor larger females?
Signup and view all the answers
What is the term for traits or features that correlate with health and vitality and are often prioritized by females when choosing mates?
What is the term for traits or features that correlate with health and vitality and are often prioritized by females when choosing mates?
Signup and view all the answers
Which gender of walruses typically have longer and wider tusks?
Which gender of walruses typically have longer and wider tusks?
Signup and view all the answers
In a strongly polygynous mating system, what is the typical pattern of mate distribution among males?
In a strongly polygynous mating system, what is the typical pattern of mate distribution among males?
Signup and view all the answers
Which of the following is a mechanism of sexual selection involving female choice?
Which of the following is a mechanism of sexual selection involving female choice?
Signup and view all the answers
In a leking polygyny mating system, what is the typical pattern of male behavior?
In a leking polygyny mating system, what is the typical pattern of male behavior?
Signup and view all the answers
Which of the following statements best describes the concept of male competition in sexual selection?
Which of the following statements best describes the concept of male competition in sexual selection?
Signup and view all the answers
In the context of sexual selection, what is the primary consequence of extravagant and colorful traits in males?
In the context of sexual selection, what is the primary consequence of extravagant and colorful traits in males?
Signup and view all the answers
Which of the following mating systems is characterized by all males having the same mating success?
Which of the following mating systems is characterized by all males having the same mating success?
Signup and view all the answers
In the context of sexual selection, what is the primary factor that determines a male's reproductive success?
In the context of sexual selection, what is the primary factor that determines a male's reproductive success?
Signup and view all the answers
Which of the following statements best describes the concept of sexual selection?
Which of the following statements best describes the concept of sexual selection?
Signup and view all the answers
In a harem polygyny mating system, what is the typical pattern of mate distribution among females?
In a harem polygyny mating system, what is the typical pattern of mate distribution among females?
Signup and view all the answers
Which of the following statements best describes the relationship between sexual selection and natural selection?
Which of the following statements best describes the relationship between sexual selection and natural selection?
Signup and view all the answers
