BROOKER BIOLOGY
5th Edition
ISBN: 9781307656152
Author: BROOKER
Publisher: MCG/CREATE
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Chapter 33.2, Problem 1CS
Core Skill: Connections Look back to Figure 25.8. Is the existence of three germ layers in triploblastic animals a shared primitive character or a shared derived character?
Figure 25.8 A comparison of shared primitive characters and shared derived characters.
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Essay on (2 pages): Describe the radiation in vertebrate forms from phylotypic stage by focusing on three groups of vertebrates and then tracing the development of several homologous features in each group. Connect specific embryological structures in the phylotypic stage to divergent morphological structures in the adults of each of these groups.
Q113: Write a short answer for each question.
• Expensive Tissue Hypothesis is an important concept that accounts for which major morphological change in the hominin family tree?
• What major selective pressures and resource niches are hypothesized to have led to these changes?
Be sure to include specific species and their morphological features that support this hypothesis.
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Chapter 33 Solutions
BROOKER BIOLOGY
Ch. 33.2 - Core Skill: Connections Look back to Figure 25.8....Ch. 33.2 - Prob. 2CSCh. 33.3 - Prob. 1CSCh. 33.3 - Prob. 1EQCh. 33.3 - Prob. 2EQCh. 33.3 - Prob. 3EQCh. 33 - Prob. 1TYCh. 33 - Prob. 2TYCh. 33 - Prob. 3TYCh. 33 - In triploblastic animals, the inner lining of the...
Ch. 33 - Prob. 5TYCh. 33 - Prob. 6TYCh. 33 - Prob. 7TYCh. 33 - Naturally occurring identical twins are possible...Ch. 33 - Prob. 9TYCh. 33 - A major finding of recent molecular studies is...Ch. 33 - Fierce debate centers on whether ctenophores or...Ch. 33 - Why was the evolution of a coelom important?Ch. 33 - Prob. 3CQCh. 33 - Discuss the many ways that animals can affect...Ch. 33 - Prob. 2COQ
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- How does developmental biology provide evidence of a common ancestry for vertebrates as diverse as reptiles, birds, pigs, and humans?arrow_forwardDescribe the radiation in vertebrate forms from phylotypic stage by focusing on three groups of vertebrates and then tracing the development of several homologous features in each group. Connect specific embryological structures in the phylotypic stage to divergent morphological structures in the adults of each of these groups. (Answer all questions, if possible)arrow_forwardGQ#14: Tiktaalik and Protarchaeopteryx are examples of transitional forms. In paleontology, what does transitional form mean?arrow_forward
- Why is morphological convergence not a good explanation for vertebrate forelimbs?arrow_forwardn. Scientists have found one new fossil that is similar to Archaeopteryx. It is only the second fossil of its kind. It shows an animal that had a long-feathered tail and small teeth, like non-avian dinosaurs. But the animal also had flight feathers and wings, like modern birds. The fossil also shows a fused clavicle bone, which confirms the relationship between birds and dinosaurs because they are the only two groups with this characteristic. What is true about this scenario? It shows evidence of evolution. It shows evidence of widespread expression. It shows evidence of climate change. It shows evidence of causation.arrow_forwardWhich is NOT an example of a structural homology? Please choose all applicable options. a) All vertebrate embryos form pharyngeal pouches.b) Vertebrate forelimbs generally have the same number and a similar arrangement of bones.c) The same group of embryonic cells forms the adult jaw of a perch and of a dog.d) All organisms share a common genetic code.arrow_forward
- How does developmental biology provide evidence of a common ancestry for vertebrates as diverse as reptiles, birds, pigs, and humans?arrow_forwardDevelopment of an animal is controlled by the genes that are expressed during development. What roles have been proposed for Hox genes in the evolution and morphology of animal species? Group of answer choices 1. Variation in the Hox genes may have spawned the formation of many new body plans. 2. All of these descriptions are correct. 3. The number and arrangement of Hox genes varies among different types of animals. 4. Increases in the number of Hox genes may have led to greater complexity in body structure.arrow_forwardWhat is typically studied when analyzing notyet-born (or unhatched) animals? (arrow_forward
- a. What is Type I and Type II embryogenesis? When did they evolve? Compare the two and give an example an extant (living) organism that follows each one. b. Type III embryogenesis evolved later, during which era? What group of animals follow Type III? Why would this type of embryogenesis evolve?arrow_forwardList the advantages of evolving a deuterostome pattern of development.arrow_forwardDirections: Use the cladogram below to answer the questions on this worksheet. Sharks Ray-finned fish Amphibians Primates Rodents & rabbits Crocodiles Hair Vertebrae 7. What trait separates amphibians from primates on this cladogram? 9. Which organism is most related to the bird on this cladogram? Bony skeleton Four limbs 8. What separates rabbits and primates from crocodiles on this cladogram? Amniotic egg Birds Eggs with shell:arrow_forward
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