WHAT IS LIFE? GDE.TO BIOLOGY W/PHYSIO.
5th Edition
ISBN: 9781319272531
Author: PHELAN
Publisher: MAC HIGHER
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Chapter 11, Problem 10SA
Summary Introduction
To review:
The types of mating systems.
Introduction:
Mating can be monogamous or polygamous.
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Chapter 11 Solutions
WHAT IS LIFE? GDE.TO BIOLOGY W/PHYSIO.
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- Why is mating important in external fertilization of animals? A) It ensures survival of offspring B) It ensures sperm dilution C) For pleasure D) It ensures fertilizationarrow_forwardIn seahorses, males incubate and care for offspring. Thus, the males are more likely to be tied up in reproduction at any point in time relative to females. Which sex do you predict will be the choosey sex in this species and why? Males -- because fewer are available to mate Males – because male-male competition is incredibly strong Females – because sperm are cheap to produce Female – because the operational sex ratio is biased in their favorarrow_forwardOn what assumptions Ratio of Males to Females in Humans is determined ?arrow_forward
- Use examples to explain sexual selection and its outcomes.arrow_forwardDescribe the added “costs” of sexual reproduction for an organism.arrow_forwardCompare and contrast female choice and male choice. Explain why sometimes it is thefemale and sometimes it is the male that is choosy. Why should one sex be choosy atall? Provide examples and interpret data.arrow_forward
- In seahorses, males incubate and care for offspring. Thus, the males are more likely to be tied up in reproduction at any point in time relative to females. Which sex do you predict will be the choosey sex in this species and why? Males -- because fewer are available to mate Males – because male-male competition is incredibly strong Females – because sperm are cheap to produce Female – because the operational sex ratio is biased in their favor The sperm of chimpanzees have faster swimming speeds than those of gorillas. Based on what you know about sperm competition, what would you predict about differences between these two species in female re-mating frequency and sperm viability? In chimps, females mate only once and sperm are viable for only a day In chimps, females mate multiply and sperm live for a long time In chimps, females mate only one, and sperm live for a long time In chimps, females mate multiply, and sperm live for only a day Which of the following sexual traits is…arrow_forwardAll of the following are correct about asexual reproduction EXCEPT a) it can create numerous offspring quickly b) the offspring are genetically identical to the parent c) it enables animals living in isolation to produce without a mate d) it is advantageous when the environment is changing and the organisms is stressed.arrow_forwardWhich factors are responsible for successful reproduction in male? Do you think the reproductive efficiency of male is declining with the passage of time? Support your point of view with examples.arrow_forward
- Do females select mates basedon traits indicative of “good genes”?arrow_forwardExplain the paradox and adaptive significance of sex. Provide examples and data thatsupport the theories regarding the evolution of sexual reproduction.arrow_forwardHow does the reproductive system of both male and female assure genetic diversity?arrow_forward
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