CAMPBELL BIOLOGY-EBOOK
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ISBN: 9780134443959
Author: Urry
Publisher: PEARSON
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Chapter 51.4, Problem 2CC
Summary Introduction
To determine: The justification of the concept of the indirect selection of the genes in an individual, due to the help and aid to the offspring of its sibling.
Concept introduction: The survival of the species depends upon the principles of the “altruistic behavior” and the “inclusive fitness” in the species. The altruistic behavior includes the volunteering of species of animals in assisting other individuals of the same race to raise progeny by mating. These species provide food to the other individuals in the species leading to their survival and mating. It is studied under the kin selection theory.
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Assume you are studying a species of slug where the eggs are fertilized and transferred to the male. As a result the male is not able to increase reproductive success by mating with multiple partners. Therefore which of the following about sexual selection in this species is not true?
Females are more likely to develop traits that signal genetic quality to males.
Females will be able to increase reproductive success with increased mating partners.
Sexual selection in males will lead them to be choosy with what females they mate with.
Sexual selection in males will lead them to mate indiscriminately when they find a female.
In some cases, males or females do care for young of their own species that are not their own, as when certain male fish take over and protect egg masses being brooded by other males or when female ducks acquire ducklings that have just left someone else’s nest. Propose alternative hypotheses to explain this phenomenon. Under what circumstances might adoptions actually raise the caregiver’s reproductive success? Under what other circumstances might adopters help nongenetic offspring as a cost of achieving some other goal?
Don't write from any online source..
 why do females have a greater disadvantage compared to males concerning sexual reproduction? How has this difference between the sex shape sexual selection in general? Choose one form of communication and explain how it is used by competing sex is attracting a mate. 
Chapter 51 Solutions
CAMPBELL BIOLOGY-EBOOK
Ch. 51.1 - If an egg rolls out of the nest, a mother greylag...Ch. 51.1 - WHAT IF? Suppose you exposed various fish species...Ch. 51.1 - MAKE CONNECTIONS How is the lunar-linked rhythm...Ch. 51.2 - How might associative learning explain why...Ch. 51.2 - Prob. 2CCCh. 51.2 - Prob. 3CCCh. 51.3 - Why does the mode of fertilization correlate with...Ch. 51.3 - MAKE CONNECTIONS Balancing selection can maintain...Ch. 51.3 - WHAT IF? Suppose an infection in a common...Ch. 51.4 - Prob. 1CC
Ch. 51.4 - Prob. 2CCCh. 51.4 - Prob. 3CCCh. 51 - How is migration based on circannual rhythms...Ch. 51 - Prob. 51.2CRCh. 51 - In some spider species, the female eats the male...Ch. 51 - Prob. 51.4CRCh. 51 - Prob. 1TYUCh. 51 - Prob. 2TYUCh. 51 - Female spotted sandpipers aggressively court males...Ch. 51 - Prob. 4TYUCh. 51 - Although many chimpanzees live in environments...Ch. 51 - Prob. 6TYUCh. 51 - Level 3: Synthesis/Evaluation 7. DRAW IT You are...Ch. 51 - EVOLUTION CONNECTION We often explain our behavior...Ch. 51 - SCIENTIFIC INQUIRY Scientists studying scrub jays...Ch. 51 - SCIENCE, TECHNOLOGY, AND SOCIETY Researchers are...Ch. 51 - WRITE ABOUT A THEME: INFORMATION Learning is...Ch. 51 - SYNTHESIZE YOUR KNOWLEDGE Acorn woodpeckers...
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- Suppose there is a type of deleterious mutation in a particular human gene that causes death very late in life. Such mutations happen in about one in every million births, and can be passed on to descendants. Which statement about this allele is false? At equilibrium, the frequency of this allele will be zero. Selection against this mutation is weak compared to an allele that causes death at an earlier age. Medical advances that extend human lifespan will increase selection against this allele. Selection against this allele depends on the rate of extrinsic mortality.arrow_forwardSuppose a person does a study on tail length in skinks (a type of lizard). She measures the tail length of 10 Southeastern Five-lined Skinks and 10 Broad-headed Skinks. (Look these up on Google if you want to see what they look like!) The average tail length of her Southeastern Five-lined Skinks is 12.7 cm, and the average tail length of her Broad-headed Skinks is 13.2 cm. What can she conclude at this point? Question 5 options: Broad-headed Skinks, on average, have longer tails than Southeastern Five-lined Skinks Southeastern Five-lined Skinks, on average, have longer tails than Broad-headed Skinks She doesn't have an answer yet because she hasn't analyzed the tail length data The two skink species most likely have the same average tail lengtharrow_forwardTwo male deer compete for access to a female by sparring with their antlers. What type of selection pressure is this? a Intrasexual b Intersexualarrow_forward
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