Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 47, Problem 9TYU
EVOLUTION CONNECTION Evolution in insects and vertebrates has involved the repeated duplication of body segments, followed by fusion of some segments and specialization of their structure and function. In vertebrates, what anatomical features reflect segmentation?
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Chapter 47 Solutions
Campbell Biology
Ch. 47.1 - How does the fertilization envelope form in sea...Ch. 47.1 - Prob. 2CCCh. 47.1 - MAKE CONNECTIONS Review Figure 12.16 on cell...Ch. 47.2 - In the frog embryo, convergent extension elongates...Ch. 47.2 - WHAT IF? Predict what would happen if Ca2+ was...Ch. 47.2 - MAKE CONNECTIONS Unlike some other types of birth...Ch. 47.3 - Prob. 1CCCh. 47.3 - Prob. 2CCCh. 47.3 - Prob. 3CCCh. 47.3 - Prob. 4CC
Ch. 47 - What cell-surface event would likely fail if a...Ch. 47 - What are some functions of apoptosis in...Ch. 47 - Suppose you found two classes of mouse mutations,...Ch. 47 - Prob. 1TYUCh. 47 - Which of the following is common to the...Ch. 47 - The archenteron develops into a. the mesoderm. b....Ch. 47 - What structural adaptation in chickens allows them...Ch. 47 - Prob. 5TYUCh. 47 - In humans, identical twins are possible because a....Ch. 47 - Cells transplanted from the neural tube of a frog...Ch. 47 - DRAW IT Each blue circle in the figure below...Ch. 47 - EVOLUTION CONNECTION Evolution in insects and...Ch. 47 - Prob. 10TYUCh. 47 - Prob. 11TYUCh. 47 - Prob. 12TYUCh. 47 - SYNTHESIZE YOUR KNOWLEDGE Occasionally, two-headed...
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- A genetic change that caused a certain Hox gene to be expressedalong the tip of a vertebrate limb bud instead of farther backhelped make possible the evolution of the tetrapod limb.This type of change is illustrative of(A) the influence of environment on development.(B) paedomorphosis.(C) a change in a developmental gene or in its regulation thataltered the spatial organization of body parts.(D) heterochronyarrow_forwardA synapomorphy and symplesiomorphy for the vertebrates (respectively) would be; True tissues, Deuterostome development True tissues, Dorsal hollow nerve chord Eukaryotic, Dueterostome development Vertebral column, True tissuesarrow_forwardIn vertebrates, what anatomical structure partially or completely replaces the notochord? 1.) lateral-line system 2.) cartilage or a bony skeleton 3.) endostyle 4.) dorsal hallow nerve cordarrow_forward
- As we progress through evolutionary time in the animal kingdom, certain trends emerge. Which is NOT a general trend observable in animal evolution? A general trend towards having a true body cavity A general trend towards asexual reproduction A general trend towards increasing tissue and organ development A general trend towards increasing cephalizationarrow_forwardEarthworm Cross Section (Annelid Cross Section) Describe each function in the earthworm cross-section: epidermis, seta, ventral blood vessel, ventral nerve cord, cuticle, coelom, dorsal blood vessel, etc. Also indicate which parts are derived from ectoderm, mesoderm, and from endodermarrow_forwardWhich of the following is not a statement of von Baer's laws? Less general characters develop from the more general, until finally the most specialized appear. The general features of a large group of animals appear earlier in development than do the specialized features of a smaller group. (C) All of the above are Statements of von Baer's laws. The early embryo of a higher animal is never like a lower animal, but only like its early embryo. The embryo of a given species, instead of passing through the adult stages of lower animals, departs more and more from them.arrow_forward
- Insects have three thoracic (trunk) segments. While researchershave found insect fossils with pairs of wings on all threesegments, modern insects have wings or related structureson only the second and third segment. It turns out thatin modern insects, Hox gene products act to inhibit wingformation on the first segment. The treehopper insect (above)is somewhat of an exception. In addition to having wingson its second segment, the treehopper’s first segment has anornate helmet that resembles a set of thorns, which a recentstudy has found to be a modified, fused pair of “wings.” Thethorn-like structure helps to camouflage the treehopper intree branches, thus reducing its risk of predation. Explain howchanges in gene regulation could have led to the evolution ofsuch a structure.arrow_forwardIn no more than 400 words name the FIVE levels of organisation in animal complexity AND explain how each successive level is more advanced than the one preceding it. PLEASE NOTE: This MUST be done in your OWN words. Marks will be deducted if quotes from google and texts books are used. DO NOT exceed 400 words.arrow_forwardMany cephalopods have a structure found inside of their head called the "pen". Because cephalopods have a "pen", evolutionary biologists have concluded; Cephalopods are evolving an endoskeleton The pen is the result of a random mutation in cephalopods The ancestor to the these cephalopods had a shell That cephalopods are evolving a shellarrow_forward
- How can embryos help scientists understand evolution? Embryos go through various stages that suggest the animal’s evolutionary process. Embryos are frequently fossilized and illustrate change over time. Embryos provide evidence for which life forms existed at the same time. Embryos contain the code for all life on Earth.arrow_forwardArthropods are known for displaying "tagmosis", which means that arthropods have tagma. The tagma of arthropods; Are the jointed appendages on the thorax Are the wings which are outgrowths of the exoskeleton Are fused body segments that are specialized for certain functions Are the specialized mouthparts they use to feedarrow_forwarda. 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_forward
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