Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Chapter 1, Problem 16PIAT
By avoiding being eaten, B. trifoliolata individuals would have increased fitness. In biology, what does the term “fitness” mean?
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In the greater ani (Crotophaga major) (Riehl 2011) and the acorn woodpecker (Melanerpes formicivorus) (Koenig et al. 1995), a group of females shares the same nest. However, when some females begin to lay eggs in the communal nest, their eggs are often tossed from the nest by other group members. Use a cost–benefit approach to explain why females whose eggs are destroyed still remain with the group. Do you think the egg-tossing females are really cooperating with the others in their group?
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article link:
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0201665
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Honey bee workers from a colony in North Carolina are visiting two food sites, A and B, at 6 am as shown below. Site A is 1500 m from the hive; site B is 300 m from the hive.
While most of the foragers are out in the field, a sudden downpour strikes which drowns many of the bees outside the hive. As a result, there is a shortage of foragers in the nest at a time when much food is available in the field. Which of the following can you correctly predict will happen:
a. The loss of foragers will cause increased activity of the Gp9 gene in some of the bees inside the nest, which will decrease their JH levels, causing them to revert to nursing behavior and raise more brood to quickly replace the lost foragers.
b. The loss of foragers will result in decreased transfer of ethyl oleate to the younger bees, which will cause JH titers in some of the younger bees to increase and they will become precocious foragers.
c. The loss of contact with older bees will cause increased Amfor and…
Chapter 1 Solutions
Biological Science (7th Edition)
Ch. 1 - Anton van Leeuwenhoek made an important...Ch. 1 - What does it mean to say that a characteristic is...Ch. 1 - 4. Could both the food competition hypothesis and...Ch. 1 - Prob. 5TYUCh. 1 - What did Linnaeus' system of naming organisms...Ch. 1 - 7. What is “selected” during natural selection?...Ch. 1 - 8. PROCESS OF SCIENCE Explain why researchers...Ch. 1 - Prob. 10TYPSSCh. 1 - Prob. 11PIATCh. 1 - Prob. 12PIAT
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