Megan, a paleontologist, is working with a new fossil collection of trilobites from the paleozoic era. Part of her research is figuring out how many species of trilobites are in this new collection. What species concept will Megan not be able to use while doing her work? Biological species concept O Phylogenetic species concept O Megan will be able to use all of them O Morphological species concept O Megan will not be able to use any of them

Megan, a paleontologist, is working with a new fossil collection of trilobites from the paleozoic era. Part of her research is figuring out how many species of trilobites are in this new collection. What species concept will Megan not be able to use while doing her work? Biological species concept O Phylogenetic species concept O Megan will be able to use all of them O Morphological species concept O Megan will not be able to use any of them

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter11: Evidence Of Evolution

Section: Chapter Questions

Problem 5SQ

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Below is a phylogeny depicting the relationship among eight animal species (A to H). Next to the species names are the tooth morphology of each species. For example, species A has prominent molar teeth, thus likely a herbivore. On the other hand, species C has prominent canine teeth, thus likely a carnivore. Which of the following statements is correct? The most recent common ancestor for species A to H is probably a carnivore. The most recent common ancestor for species A to H is probably a herbivore. It is impossible to tell what the main food source is for the most recent common ancestor of species A to H. For species C, D, E, F, G, there are four evolutionary events that lead to the evolution of canine tooth morphology. IF the common ancestor of species C, D, E, F, G is a carnivore, then the molar teeth for species D is a plesiomorphy.
The phylogenetic tree for 12 cat species (Felidae) reproduced at right was assembled from molecular sequence data. Which species is the domestic cats closest relative? Which clade is the sister taxon to tigers? Are bobcats more closely related to cougars or to ocelots? Source: From Warren E. Johnson et al. 2006. The late Miocene radiation of modern Felidae: A genetic assessment. Science 311:7377.
What kind of trait is important to cladistics? a. shared derived traits b. shared ancestral traits c. analogous traits d. parsimonious traits
In studying a species of fish, a structure is discovered that has no apparent function. If this is a vestigial structure, what would you find in at least some relatives of this fish? Why? * The structure should look different and also have no function. A similar structure should be present, but it would be larger and have a function. The structure should be present and also have no function. No answer The structure should be absent from fossils of ancestors of this species.
I am having a hard time understanding the parts of a phylogenetic tree? What I mean by that is I don't know how to idenitfy what branches, nodes, and clades are? I know the definitions but I jsut keep getting confused. I also need help with knowing how closely related certain species are?
A 2015 article in Nature has summarized the early history of jawed vertebrates using highlights from recent discoveries and how they have changed our understanding of vertebrate evolution. https://www.sciencedaily.com/releases/2014/04/140416133336.htm Question: Given these recent discoveries, how should the cladogram below change? Describe it. It will likely be helpful to reference a synapomorphy noted on the cladogram.
Make a table separating the animals based on the physical properties such as: I. Presence or absence of a backbone II. Ability to breathe in air or water III. Cold or warm blooded IV. Carnivore, herbivore, or omnivore V. Presence or absence of hair/fur VI. Any other external structure such as horns After that, construct a phylogenetic tree (example is on the picture I uploaded)
4Scientists should only use derived traits to construct phylogenies because many fossil species retain only derived traits. derived traits are under greater genetic control than are analogous and homologous traits. all organisms have homologous traits. analogous and homologous traits do not tell us anything about close phylogenetic relationships.
PROPOSE A SOLUTION FOR THESE PROBLEMS In the evolution divergence of Sardinella Tawilis, many issues are being addressed in studying this species. These issues are the following: Complexity of the study. Scientific name revisions. Taxonomy impedimen Lack of knowledge. Limited morphologiIcal dat Morphological characterization is not entirely robust. Unknown ancestor. Relationship of Sardinella tawiliswith sister-species Sardinella hualiensis.
For novice biologists, taxonomy and phylogenetics are difficult concepts to understand and keep separate. This confusion is made worse because modern taxonomic methods make use of molecular tools. Write an essay that contrasts taxonomy to phylogenetics and explain how both disciplines are important to our understanding of species and evolution. Your essay should include a description of taxonomy and phylogenetics, as well as a detailed explanation about how information is represented in a phylogenetic tree or a cladogram.
Which of the following is TRUE about a phylogenetic tree? It provides a drawing the reflects the proven relationships between living and extinct species. b It provides a hypothetical model of the relationships between extinct species. c It provides a hypothetical model of the relationships between living and extinct species. d It a diagram used by scientists that provides a model of evolutionary relationships without the need for scientific data.
Looking at the present, the evolutionary relationships between extant species can be seen in the presence of body parts sharing a common basic design. These structures are descended from a common ancestor. Sometimes, structures which no longer serve their original function are found in modern species. What is this structure?