Concept explainers
To describe: The results obtainedby Cooper and colleagues after the comparison of sequences of DNA.
Introduction: The differentiation or classification ofthe species on the basis of evolutionary relationships between the organisms is called “cladistics.”By usinga cladisticapproach, the characters which are shared or not shared between a number of species can be representedin the form of a phylogenetic tree.
To determine: The proposed phylogeny of flightless birds affected by the results of the study.
Introduction: The differentiation or classification ofthe species on the basis of evolutionary relationships between the organisms is called “cladistics.” By using a cladisticapproach, the characters which are shared or not shared between a number of species can be representedin the form of a phylogenetic tree.
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BIOLOGY
- Molecular sequence data indicate that Xenoturbella is a deuteros-tome. Are there corresponding morphological characters?arrow_forwardDescribe at least two major changes to the animal phylogenetic tree that have come about due to molecular or genetic findings.arrow_forwardGive typed explanation of both otherwise leave itarrow_forward
- 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. Note: no copy, no plagiarism write your own words.arrow_forwardHow do I construct a Venn diagram or cladogram?arrow_forward7) Examine the image of the relatedness of vertebrates represented in this phylogenetic tree. Select all the statements that are supported by this tree. A) Gray whales are the common ancestor of the Blue and Humpback whales. B) Blue and humpback whales diverged more recently than either did from the gray whale. C) The Bryde's whale shares a more recent common ancestor with the Sei whale than with the Fin whale. D) The blue and the Bryde's whale have more traits in common with each other than with any other two species, E) Southern minke whales and Northern minke whales have more traits in common with each other than with any other species. Not Gradedarrow_forward
- As for the scales of the mermaid (assuming they exist) where do they evolve? And explain pls.arrow_forwardExamine the image of the relatedness of vertebrates represented in this phylogenetic tree. Which statements are correctly inferred from this tree? Select all that apply. A) The mammals are the outgroup in this tree. B) Birds and dinosaurs share a recent common ancestor. C) Mammals and birds are more closely related than any other species. D) Turtles are equally as diverged from lizards and snakes as they are from crocodiles. E) Lizards and snakes are more recently diverged from each other than they are from crocodiles.arrow_forwardSee attached. Please put either Homologous Structures or Analogous Structures in the "Type" Row and its functions in the "Functions" row. Thanks!arrow_forward
- helpp mee plsarrow_forwardI am working on reconstructing the phylogenetic history of North American squirrels. I decide to use teat number as a character (trait) for inferring their phylogeny. I do some research into other squirrels and mammals and discover the following: • Mammals and other squirrels only have even numbers of teats. Teat number appears to be unrelated to any other morphologic trait. • The MRCA of all mammals, and therefore all squirrels, also had teats. Which of the following characteristics (either required of traits used in phylogenetic reconstruction, or desired) does teat number appear to have? Choose all that apply. It's mutation rate is known or estimable O It is homolgous rather than analagous It is discrete It is analagous rather than homologous OIt is quantifiable It is independent of other traits It is DNA sequence dataarrow_forwardDesign an Experiment Imagine that you are trying to determine the evolutionary relationships among six groups of animals that look very much alike because they have few measurable morphological characters. What data would you collect to reconstruct their phylogenetic history?arrow_forward
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