CAMPBELL BIOLOGY MOD MASTERING (18 WEEK)
12th Edition
ISBN: 9780136920335
Author: Urry
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 34.2, Problem 2CC
WHAT IF? Ø In several different animal lineages, organ- isms with a head first appeared around 530 million years ago. Does this finding constitute proof that having a head is favored by natural selection? Explain.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
. The upper forelimbs of humans and bats have fairly similarskeletal structures, whereas the corresponding bones inwhales have very different shapes and proportions. However,genetic data suggest that all three kinds of organisms divergedfrom a common ancestor at about the same time. Which ofthe following is the most likely explanation for these data?(A) Forelimb evolution was adaptive in people and bats, butnot in whales.(B) Natural selection in an aquatic environment resulted insignificant changes to whale forelimb anatomy.(C) Genes mutate faster in whales than in humans or bats.(D) Whales are not properly classified as mammals.
Which observation is NOT an evidence for Darwin's theory of common descent?
O There are biogeographic patterns in the distributionof species, for instance distinct bird species on an island tend to resemble.
O There are common stages in the early embryological development of organisms representing several distinct vertebrate
groups.
O Anatomical structures, such as forelimbs, in different groups appear to be modified versions of structures that might have been
present in a common ancestor.
O Due to innate drive to improve, parts that are extensively used becomes larger and stronger and passed on to the next
generation as seen on fossil records.
hat I Can Do
The evolution of man is one of the
most fascinating discussion and discovery
in the field of science. Humans as the race
that have dominated the Earth and seem
to be at the center of it have evolved
greatly.
Observe the illustration on the left.
The common ancestor of the primates like
chimpanzees and humans might look like a primitive primate with four limbs on
which the forelimbs are used to hang on trees. After some time, the emergence of
humans has marked a great change on the history of life on Earth.
In your point of view as a senior high school STEM student, are humans still
evolving? Provide evidences for your answer.
Chapter 34 Solutions
CAMPBELL BIOLOGY MOD MASTERING (18 WEEK)
Ch. 34.1 - Identify four derived characters that all...Ch. 34.1 - Prob. 2CCCh. 34.1 - VISUAL SKILLS Based on the phylogenetic tree...Ch. 34.2 - How are differences in the anatomy of lampreys and...Ch. 34.2 - WHAT IF? In several different animal lineages,...Ch. 34.2 - WHAT IF? Suggest key roles that mineralized bone...Ch. 34.3 - What derived characters do sharks and tuna share?...Ch. 34.3 - Describe key adaptations of aquatic gnathostomes.Ch. 34.3 - draw it Redraw Figure 34.2 to show four lineages:...Ch. 34.3 - WHAT IF? Imagine that we could replay the history...
Ch. 34.4 - Prob. 1CCCh. 34.4 - Some amphibians never leave the water, whereas...Ch. 34.4 - WHAT IF? Scientists think that amphibian...Ch. 34.5 - Describe three key amniote adaptations for life on...Ch. 34.5 - Prob. 2CCCh. 34.5 - Identify four avian adaptations for flight.Ch. 34.5 - VISUAL SKILLS Based on the phylogeny shown in...Ch. 34.6 - Prob. 1CCCh. 34.6 - Prob. 2CCCh. 34.6 - MAKE CONNECTIONS Develop a hypothesis to explain...Ch. 34.7 - Identify some characters that distinguish hominins...Ch. 34.7 - Provide an example in which different features of...Ch. 34.7 - WHAT IF? Some genetic studies suggest that the...Ch. 34 - Describe likely features of the common ancestor of...Ch. 34 - Identify the shared features of early fossil...Ch. 34 - How would the appearance of organisms with jaws...Ch. 34 - Which features of amphibians restrict most species...Ch. 34 - Explain why birds are considered reptiles.Ch. 34 - Describe the origm and early evolution of mammals.Ch. 34 - Prob. 34.7CRCh. 34 - Vertebrates and tunicates share (A) jaws adapted...Ch. 34 - Living vertebrates can be divided into two major...Ch. 34 - Unlike eutherians, both monotremes and marsupials...Ch. 34 - Prob. 4TYUCh. 34 - As hominins diverged from other primates, which of...Ch. 34 - Which of the following could be considered the...Ch. 34 - Prob. 7TYUCh. 34 - SCIENTIFIC INQUIRY DRAW IT As a consequence of...Ch. 34 - Prob. 9TYUCh. 34 - SYNTHESIZE YOUR KNOWLEDGE This animal is a...
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
- Anthropologyarrow_forward5 2 nts 3 Help Save & Exit Review the discussion of evolution and Investigating Life 1.1. Which of the following statements is/are most likely true? (Select all that apply.) 80 A Check All That Apply Moths that could smell the nectar at the bottom of the orchid saw the need for a longer tongue, so they grew one that reached the nectar and passed on the longer tongue to their offspring. Moths that could smell the nectar at the bottom of the orchid mated with females that had longer tongues so that their offspring might have a chance to reach the nectar At least one moth species has always been able to reach the nectar of the orchid. Moths with longer tongues are more likely to have access to the orchid nectar and are therefore more likely to survive to reproduction. 000 F4 Orchids with deeper nectaries are more likely to have moths rub against their pollen, and are therefore more likely to reproduce than orchids with shallow nectaries. % Saved 8 F7 DII FB F9 what does evolution ofarrow_forwardINTERPRET DATA Which of the primates in Figure 18-18 is the most distantly related to humans? Explain your answer. Figure 18-18 Differences in DNA nucleotide sequences as evidence of evolutionary relationships Comparing the same gene in different organisms provides a window into evolution. Here the differences in the non-protein-coding region of the -globin gene are compared between humans and other primates. Evolutionary biologists are rapidly expanding such studies from comparing one or several genes to comparing entire genomes.arrow_forward
- Some advocates of the view that all organisms were created simultaneously by God argue that vestigial structures do not constitute evidence of evolution, because they show only that a divinely created structure can degenerate over time. According to this view, human tailbones are not evidence of evolution because they do not show that an adaptive improvement has occurred. Is this a valid argument?arrow_forwardHow could natural selection have led to the evolution of adaptationssuch as camouflaging coat color in beach mice?arrow_forwardWhat can we say about Homo sapiens? Select one: O a. Originated in Africa, shared a common ancestor with Neanderthals, Denisovans, and most likely descendants from a group related to Homo heildenbergensis O b. Migrated out of Africa, most likely 2 million years ago, hybridized with Homo floresiensis and differentiated from other Homo as the sole species to evolved language. O c. Migrated from Ethiopia 200,000 years ago, hybridized with Denisovans and Neanderthals to later replace them O d. Is the result of hybridization between Neanderthals and Denisovans, only lineage to show bipedalism and posses the largest brain capacity of all Homo O e. A and C are correctarrow_forward
- How would you apply this in a Lamarckian explanation? Tiger Moths (Bertholdia trigona) produce high pitched ultrasonic clicking (at a rate of 4500 clicks/sec) when they hear the echolocation calls of bats (bats eat moths). As a result, the bat's sonar is jammed and the Tiger Moth escapes without being caught, killed, and eaten. Please use your knowledge of Evolution by Natural Selection to explain the process by which this remarkable anti-predator defense evolved in Tiger Moths. Please use your Knowledge of Evolution by Natural Selection to explain the process by which this remarkable anti-predator defense evolved in Tiger Moths.arrow_forwardtes es When Charles Darwin visited the Galapagos Islands, he observed the marine iguana. He later decided that the marine iguana evolved from the terrestrial iguana found on the mainland of South America. The marine iguana differs from the terrestrial iguana in several ways. The marine iguana has a flat tail, long claws and sharp teeth while the terrestrial iguana has a round tail, short claws and flat teeth. When looking at the differences between the terrestrial and the marine iguana, which of the following is not evidence that evolution has occurred? ers ences nline riods 1 and 2 Homologous structures shared between both iguanas P1, Highschool wol MP3, The biogeography of the iguanas 4 Comparative embryology of the iguanas The state of Hardy-Weinberg equilibrium present in both iguanas hu Fri The medium ground finch is one of Darwin's finches that inhabits an island in the Galapagos. It has a small beak that it uses to eat smallI, soft seeds. Irn 1977, a drought eliminated all but…arrow_forwardGive a Darwinian explanation of how cheetahs evolved to become faster. Your explanation is how natural selection works using Cheetahs as an example. Be sure to include andexplain the ideas of differential reproductive success and descent with modification. (You do not need to mention the formation of new species.)arrow_forward
- According to Darwinian evolution, there must be variation and selection. In the evolution of large claws in lobsters: What trait(s) might have been variable? What factors might have resulted in members of the population being selected? Speculate about why predatory cats such as the lion and the leopard have not evolved to be as fast as the cheetah. The elephant has evolved to be a great size, while the mouse has evolved to be relatively small. Explain how natural selection might favour a different size in each mammal species.arrow_forwardMicrotaxonomy ( Species and Speciation ) People who do not believe in evolution often cite the classic example of man presumably evolving from the apes. They oftern ask: if humans evolved from apes, why are there apes until today? How will you provide a convincing answer that there is no contradiction in the existence of apes and humans at the same time?arrow_forward56) The human body contains structures that are needed for survival, or in the case of vestigial structures, were needed for survivalL Wisdom teeth, seen here, are vestigial third molars. Human ancestors had larger jaws with more teeth. Over thousands of years, man no longer needed the third molar, and they became the source of dental problems rather than an aid in survival How does this vestigial structure support the theory of natural selection? ht ing The size of man's cranial cavity evolved. With increased cranial cavity size, the size of man's brain also grew. This resulted in a smaller jaw and no 14 A) room for the third molars. Agriculture and the use of fire changed what and how man ate and need for these teeth diminished over time. Jaw size and shaped evolved and there was insufficient room for the third molars. he B) The climate on Earth changed from very cold to tropical The tropical climate on Earth lead to a change in the diet of humans and that lead to the need for sharp,…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningBiology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage LearningBiology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning
- Biology: The Unity and Diversity of Life (MindTap...BiologyISBN:9781305073951Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa StarrPublisher:Cengage Learning
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Biology Today and Tomorrow without Physiology (Mi...
Biology
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Biology: The Unity and Diversity of Life (MindTap...
Biology
ISBN:9781305073951
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Discovering the tree of life | California Academy of Sciences; Author: California Academy of Sciences;https://www.youtube.com/watch?v=AjvLQJ6PIiU;License: Standard Youtube License