Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 1.2, Problem 2CC
Referring to Figure 1.20, provide a possible explanation for how, over a very long time, the green warbler finch came to have a slender beak.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
You are a researcher studying birds in an Indonesian rainforest. You have just discovered two new species whose beaks are markedly different, which you have named Laetiphonia orthorhynchus and Laetiphonia rhamphis. In particular, the beaks of L. orthorhynchus are very long, straight and pointed, whereas L. rhamphis have beaks that are quite short, wide and curved downwards. In further studies, you find that the same gene codes for beak shape in both species.
In your own words, explain at least two ways that changes in gene expression could result in the differences you observe between these two species. Make sure to be specific in how your explanation applies to the bird species in this example.
Ostrich wings are vestigial because they are too rudimentary to perform the function for which they evolved in the species’ flying ancestor. Nonetheless, the ostrich uses its wings for other purposes. For example, an ostrich may extend its wings to the side while running, to help maintain balance, and it may spread its wings as part of a threat display. These uses show that evolution by natural selection can sometimes repurpose vestigial structures that have lost the function for which they originally evolved. But whether a vestigial structure remains useless or acquires a new function, it is homologous to the version that retains its original function in other organisms and provides evidence of common ancestry. But are all similarities between different organisms the result of shared ancestry?
What contributed to the natural selection of the finches' beaks?
Chapter 1 Solutions
Campbell Biology
Ch. 1.1 - Starting with the molecular level in Figure 1.3,...Ch. 1.1 - Identify the theme or themes exemplified by (a)...Ch. 1.1 - WHAT IF? For each theme discussed in this...Ch. 1.2 - Explain why "editing" is a metaphor for how...Ch. 1.2 - Referring to Figure 1.20, provide a possible...Ch. 1.2 - DRAW IT The three domains you learned about in...Ch. 1.3 - What qualitative Observation led to the...Ch. 1.3 - Contrast inductive reasoning with deductive...Ch. 1.3 - Why is natural selection called a theory?Ch. 1.3 - WHAT IF? In the deserts of New Mexico, the soils...
Ch. 1.4 - How does science differ from technology?Ch. 1.4 - MAKE CONNECTIONS The gene that causes sickle-cell...Ch. 1 - Prob. 1.1CRCh. 1 - How could natural selection have led to the...Ch. 1 - What are the roles of gathering and interpreting...Ch. 1 - Explain why different approaches and diverse...Ch. 1 - Prob. 1TYUCh. 1 - Prob. 2TYUCh. 1 - Which of the following best demonstrates the unity...Ch. 1 - Prob. 4TYUCh. 1 - Which of the following statements best...Ch. 1 - Which of the following is an example of...Ch. 1 - Prob. 7TYUCh. 1 - Prob. 8TYUCh. 1 - Prob. 9TYUCh. 1 - SCIENTIFIC INQUIRY Based an the results of the...Ch. 1 - WRITE ABOUT A THEME: EVOLUTION In a Short essay...Ch. 1 - SYNTHESIZE YOUR KNOWLEDGE Can you pick out the...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- The presence of tiny hairs, called setae, on the toe pads of some geckos is associated with the ability to adhere to smooth surfaces. This ability allows geckos to climb in areas where many predators cannot. Scientists studying the evolution of setae have identified three closely related species of gecko, only one of which can adhere to smooth surfaces.. A model of the evolutionary relatedness between these species is represented in the figure. G. humeralis 1 Can adhere OG. concinnatus O Cannot adhere O G. antillensis Which of the following statements is an accurate description of the evolutionary relationships shown in the model? G. concinnatus is more closely related to G. antillensis than to G. humeralis. DNA nnd protein segienci in common with G humeralis than with G concionatusarrow_forwardThe phylogeny in this figure shows the evolution of visual opsins in tetrapods. Each colored triangle represents a different opsin. Which of the following accurately describes the opsins in these species? Squamate reptiles Birds Rodents New World Baboons primates Click to view larger image. - Opain loss x Opain loss ▲▲▲▲ Tetrapod ancestor ▲▲▲ Humane +A Opin gain a. The green opsin is a synapomorphy in rodents and New World primates, and the light blue opsin is a symplesiomorphy in baboons and humans. b. The light blue opsin is a synapomorphy in squamate reptiles and birds, and the green opsin is an ancestral trait. OC. The purple opsin is an analogous trait, and the green opsin is a homologous trait. Od. The green opsin is a synapomorphy in baboons and humans, and the light blue opsin is symplesiomorphy in squamate reptiles and birds.arrow_forwardThese finches all evolved from a common ancestor. They adapted characteristics which made them each a different species. 1. What is the term for a new species evolving. 2. Analyze the different beak shapes and sizes in this image, then explain why you think the birds beaks are shaped the way that they are shaped. 1. Geospiza magnirostris. 3. Geuspiza parvula. 2. Geospiza fortis. 4. Certhiidea olivasea.arrow_forward
- Is this evolutionary conservation of the pecten structure evidence that natural selection might be maintaining the pecten in its present form in many bird species? Is this theory one that suggests the pecten has a significant adaptive function in birds? Do you believe that experiments might be useful in determining the adaptive function of the pecten if it indeed serves an adaptive function? Outline a simple experiment to see whether the presence of a pecten in the bird's eye is an adaptation.arrow_forwardDescribe the impact of ecological niches on the evolution of Galápagos finch beaksarrow_forwardIf an altered structure, such as the long neck of the giraffe, is advantageous, why don’t all species have that structure?arrow_forward
- What type of geographic barriers could have led to the speciation of finch in the Galápagos Islands?arrow_forwardFlight in birds developed over time as a result of multiple evolutionary steps. The development of feathers, hollow bones, large flight muscles, and efficient gas exchange were all vital for flight. Describe the order in which these adaptations likely evolved and explain your reasoning.arrow_forwardFlight in birds developed over time due to multiple evolutionary steps. The development of feathers, hollow bones, large flight muscles, and efficient gas exchange was vital for flight. Describe the order in which these adaptations likely evolved and explain your reasoning.arrow_forward
- Based on the phylogenetic tree diagram in Figure 34.2, predict which vertebrate groups should have lungs or lung derivatives. Explain.arrow_forwarddescribe arguments for and against classifying feathers as an adaptation to flying in birds.arrow_forwardWhat is the function of including an outgroup in this phylogeny? After all, the point of the phylogeny is to see which Galapagos finch species are most closely related to each other.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSON
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Anatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education
GCSE Biology - Adaptations #79; Author: Cognito;https://www.youtube.com/watch?v=tC-u8xcZYSM;License: Standard Youtube License