Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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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.
Species
Embryo (A-F)
Describe the Anatomical
Changes from Early to Late
Stages
Human
Chicken
Rabbit
Tortoise
Salamander
В
Fish
A
Guide Questions:
1. Look again at the six embryos in their earliest stages. Describe the patterns you see. What physical
similarities exist between each of the embryos?
2. Does this suggest an evolutionary relationship? Explain how these embryos can be used as evidence of
a common ancestor between each of these six organisms.
Chapter 33 Solutions
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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- 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. (Answer all questions, if possible)arrow_forwardWhy is morphological convergence not a good explanation for vertebrate forelimbs?arrow_forwardGQ#14: Tiktaalik and Protarchaeopteryx are examples of transitional forms. In paleontology, what does transitional form mean?arrow_forward
- n. 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_forwardExplain the function of large male canines in a sexually dimorphic primate species: Examine the illustration below and answer the following questions: a. Compare fore-limb (arm) length to hind-limb (leg) length in this primate. Are they the same or different? If different, which is shorter and which is longer? b. What is the locomotor pattern of this primate? c. This is a/an (circle the correct answer) (1) prosimian (2) monkey (3) apearrow_forwardDiscuss the idea that every evolutionary adaptation has both advantages and disadvantages, using each of the following as an example: (a) cephalization,(b) the arthropod exoskeleton, and (c) segmentation with specialization.arrow_forward
- How does developmental biology provide evidence of a common ancestry for vertebrates as diverse as reptiles, birds, pigs, and humans?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_forwardWhat is typically studied when analyzing notyet-born (or unhatched) animals? (arrow_forward
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