CONNECT-W/ LEARNSMART LABS INQUIRY INTO
16th Edition
ISBN: 9781260482560
Author: Mader
Publisher: MCG
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Chapter 27.5, Problem 2CYP
Explain the following: you find evidence of an adaptive radiation in the fossil record, followed by a long period of little change. Which model of evolution would this support?
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Using radioactive isotopes to determine the age of a fossil is known as radiometric dating. How might radiometric dating provide support for the theory of evolution by natural selection? Hint—Consider the age of fossils with respect to the overall fossil record (the entire collection of data regarding fossils and the age of Earth).
It is known that it takes very long periods of time for new species to develop, and yet the fossil record for many organisms is characterized by long periods of Stasis (no change) followed by short bursts of intense Speciation (the disappearance of one species followed by the appearance of a new species). Thus in the fossil record, organisms seem to stay the same for long periods of time followed by a “sudden” change in the organisms (sudden with respect to evolution and geology). In other words, it appears that new species evolve suddenly as opposed to over long periods of time. The Theory of Punctuated Equilibrium helps to explain these seemingly contradictory occurrences in the fossil record. Discuss how Punctuated Equilibrium works (think about small offshoot populations that break off from the main population) and how it can explain the fossil record evidence. (Be sure to include information about why fossils of the offshoot population would be rare.)
This phylogeny consists of two distinct genera of cat; one with one species (P. aliquam) and another of three species (the red box indicates their distance). The species have three main physical traits: coat colour, ear tufts and tail shape. At the ancestral nodes of the tree, it can be seen what the ancestor of these species looked like for these three traits. Each of these traits has undergone a different type of evolution. Choose one type of evolution and explain the mechanism that brought the given characteristics.
Chapter 27 Solutions
CONNECT-W/ LEARNSMART LABS INQUIRY INTO
Ch. 27.1 - List two observations Darwin made on his voyage...Ch. 27.1 - Identify the Darwin’s and Lamarck’s theories of...Ch. 27.1 - Summarize the four main observations that make up...Ch. 27.1 - Describe the four critical elements of Darwin’s...Ch. 27.1 - Explain why Lamarck’s in heritance of acquired...Ch. 27.1 - 3. Summarize the process of natural selection.
Ch. 27.2 - Prob. 1LOCh. 27.2 - Prob. 2LOCh. 27.2 - Prob. 1CYPCh. 27.2 - Explain how a breeder might a new breed of dog...
Ch. 27.2 - Prob. 3CYPCh. 27.3 - List the five conditions necessary for the allele...Ch. 27.3 - Prob. 2LOCh. 27.3 - Prob. 3LOCh. 27.3 - Prob. 1CYPCh. 27.3 - Prob. 2CYPCh. 27.4 - Prob. 1LOCh. 27.4 - List the four requirements of evolution by natural...Ch. 27.4 - Prob. 3LOCh. 27.4 - Prob. 1QTCCh. 27.4 - Prob. 2QTCCh. 27.4 - Prob. 3QTCCh. 27.4 - Prob. 1AQTCCh. 27.4 - Prob. 2AQTCCh. 27.4 - Prob. 1CYPCh. 27.4 - Prob. 2CYPCh. 27.4 - 3. Describe how malaria makes having a sickle cell...Ch. 27.5 - Prob. 1LOCh. 27.5 - Prob. 2LOCh. 27.5 - Prob. 3LOCh. 27.5 - Prob. 1CYPCh. 27.5 - Explain the following: you find evidence of an...Ch. 27.6 - Prob. 1LOCh. 27.6 - Prob. 2LOCh. 27.6 - Prob. 3LOCh. 27.6 - Prob. 1CYPCh. 27.6 - 2. Describe the differences between a cladogram...Ch. 27.6 - Prob. 3CYPCh. 27 - Prob. S3.3BYBCh. 27 - Prob. S23.1BYBCh. 27 - Prob. S25.1BYBCh. 27 - Prob. 1ACh. 27 - Prob. 2ACh. 27 - Prob. 3ACh. 27 - Prob. 4ACh. 27 - Prob. 5ACh. 27 - Prob. 6ACh. 27 - Prob. 7ACh. 27 - Prob. 8ACh. 27 - For 7-11, Match the description with the...Ch. 27 - Prob. 10ACh. 27 - Prob. 11ACh. 27 - Prob. 12ACh. 27 - Prob. 13ACh. 27 - Prob. 14ACh. 27 - 15. The three-domain classification system has...Ch. 27 - Prob. 16ACh. 27 - Prob. 1TCCh. 27 - Prob. 2TCCh. 27 - Prob. 3TCCh. 27 - Prob. 4TCCh. 27 - Prob. 5TC
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- Define the following terms: divergent evolution, convergent evolution, analogous structures, homologous structuresarrow_forwardFossils show that dinosaurs originated between 200 and 250 million years ago. Would you expect the geographic distribution of early dinosaur fossils to be on multiple continents or on a single continent? Explain. Hint: refer to continental drift in your explanation.arrow_forwardA scientist used satellite images to track the natural habitats of two species of salamanders: E. eschscholtzii (shown in green) and E. klauberi (shown in brown). What type of evidence of evolution is this? *arrow_forward
- All the following statements support the theory that similar organisms have a common ancestor except Select one: a. similar DNA patterns occur in closely related organisms b. organisms sharing a habitat tend to develop similar behaviours c. transitional fossils show links between groups of organisms d. groups of organisms display similar embryonic developmentarrow_forwardWhich of the following is false concerning the evidence for evolution? Vestigial structures are a reduced structure or organ that was once useful to an ancestral species. B The more closely related two species are, the fewer DNA base differences there is. In radiometric dating, fossils with more stable elements are younger than fossils with radioactive elements. D Species that share a common ancestry will have homologous structures.arrow_forwardTransitional species are species important in helping scientists determine the evolutionary path that species have taken over long periods of time. Lobe-finned fishes are the ancestors of amphibians and have fossils that are found in rocks that are at least 380 million years old. Fossils of the oldest amphibian-like vertebrate animals with true legs and lungs are found in rocks that are approximately 363 million years old. Paleontologists have found a sample of rock that is approximately 370 million years old which contains what seems to be a link between lobe-finned fishes and amphibians. Which of the following is a characteristic that you would not expect to see in this transitional fossil? Question options: Skeletal structures that indicate the development of legs. An intermediate structure between lungs and gills. Teeth that are intermediate to the lobe-finned fishes and amphibians. A neck that is more flexible than lobe-finned fishes.arrow_forward
- There are two hypotheses to explain the pattern of Human Evolution: 1) Progressive Evolution of a Single Lineage ; 2) Evolutionary Radiation Which of these hypotheses are supported by evidence, and briefly explain why? Please explain in detailsarrow_forwardThe theory of evolution is supported by a large body of evidence. What is the first occurrence of found in geologic strata?arrow_forwardEvolution is the theory that species change over time. According to this theory, new species form from existing species through variation and natural selection. The evolutionary process is very slow and the transformation of one species into another requires thousands of years. Several evidences are used to prove evolution and somehow reconstruct how this process occur: 1.Fossil Records. 2.Homologous Body Structures. 3.Vestigial structures. 4.Similarity of embryo. 5.Geographical evidencearrow_forward
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