Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 39, Problem 12TYU
SYNTHESIZE YOUR KNOWLEDGE
Acorn woodpeckers (Melanerpes formicivorus) stash acorns in storage holes they drill in trees. When these woodpeckers breed, the offspring from previous years often help with parental duties. Activities of these nonbreeding helpers include incubating eggs and defending stashed acorns. What questions about the proximate and ultimate causation of these behaviors might a biologist ask?
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Chapter 39 Solutions
Campbell Biology in Focus (2nd Edition)
Ch. 39.1 - Contrast the role of Ca2+ in the contraction of a...Ch. 39.1 - WHAT IF? Why are the muscles of an animal that has...Ch. 39.1 - Prob. 3CCCh. 39.2 - Prob. 1CCCh. 39.2 - Prob. 2CCCh. 39.2 - Prob. 3CCCh. 39.3 - Prob. 1CCCh. 39.3 - MAKE CONNECTIONS How is the lunar-linked rhythm of...Ch. 39.4 - How might associative learning explain why...Ch. 39.4 - Prob. 2CC
Ch. 39.4 - MAKE CONNECTIONS How might a learned behavior...Ch. 39.5 - Prob. 1CCCh. 39.5 - MAKE CONNECTIONS Balancing selection can maintain...Ch. 39.6 - Prob. 1CCCh. 39.6 - Prob. 2CCCh. 39 - During the contraction of a vertebrate skeletal...Ch. 39 - Prob. 2TYUCh. 39 - According to Hamiltons rule, A. natural selection...Ch. 39 - The binding of calcium to the troponin complex A....Ch. 39 - Curare, a substance that blocks the acetylcholine...Ch. 39 - Prob. 6TYUCh. 39 - Prob. 7TYUCh. 39 - SCIENTIFIC INQUIRY Propose a hypothesis to explain...Ch. 39 - SCIENTIFIC INQUIRY Scientists studying scrub jays...Ch. 39 - Prob. 10TYUCh. 39 - FOCUS ON INFORMATION Learning is defined as a...Ch. 39 - SYNTHESIZE YOUR KNOWLEDGE Acorn woodpeckers...
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- A)Research shows that Neandertals coexisted with at least three other species, including Homo sapiens. There are some humans today that have Neandertal and Denisovan genes. Generate a hypothesis about how their genes are also a part of our genes. B) Using this information: In 1993, primatologist Richard Wrangham proposed that "Bonobo hypersexuality appears closely linked to the evolution of female-female alliances. I suggest that these alliances were made possible by relaxed feeding competition."Generate a hypothesis about why Bonobos behave this way..arrow_forwardEVOLUTION LINK When a black-tailed prairie dog or other small animal dies, other prairie dogs bury it. Develop a hypothesis to explain how this behavior may be adaptive. How would you test this hypothesis?arrow_forwardEndler (1980) set up two experiments, one in the greenhouse and one in the field to test the influences of mate choice and predation in determining colorfulness of male guppies. Identify the roles of mate choice and predation in determining colorfulness of male guppies. Identify the advantage and shortcomings of the greenhouse experiments. Identify the advantages and shortcomings of field experiments along the Aripo River. Identify other factors, especially physical and chemical factors, might influence male color.arrow_forward
- Female mimicry by males occurs in many species. For example, in the Broadley’s flat lizard (Platysaurus broadleyi), some males have the brown coloration of females while others are far more colorful (Whiting et al. 2009). Female mimics do secure some matings in the territories of their larger, more colorful rivals. Why are the bigger males (and those of the marine isopod Paracerceis sculpta) ever fooled into tolerating a female mimic? Why do female mimics occur in any species if the mating success of these individuals is lower than that of the bigger territorial males? Don't write from any online source..arrow_forwardNursing bees take care of the queen and newly hatched bees. However, nursing bees themselves do not reproduce. How could natural selection act upon such behavior? Because this behavior does not directly benefit the nursing bee itself, it is not favored by natural selection. Because this behavior increases the number of surviving offspring that share genes with the nursing bee, it is favored by natural selection. Because this behavior selectively decreases the number of offspring harboring non-similar genes with the nursing bee, it is favored by natural selection. Because this behavior does not increase the number of surviving offspring that are identical in genes with the nursing bee, it is not favored by natural selection.arrow_forwardLiving things that are well adapted to their environment survive and reproduce. Those that are well adapted don't survive and reproducer. An adaption is any characteristics that increase fitness,which is defined as the ability to survive and reproduce. What characteristics of the mice is an adaptation that increased their fitness?arrow_forward
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