Concept explainers
To explain: The term molecular paleontology.
Introduction: The term “cladistics” can be defined as the classification of the species on the basis of evolutionary relationships. Construction of a phylogenetic tree can be done by applying the cladistic approach. In this approach, the characters which are shared or not shared between a number of species, based on the evolutionary change are represented in the form of a phylogenetic tree.
To determine: The purpose of the study which was conducted by Cooper and his colleagues.
Introduction: The term “cladistics” can be defined as the classification of the species on the basis of evolutionary relationships. Construction of a phylogenetic tree can be done by applying the cladistic approach. In this approach, the characters which are shared or not shared between a number of species, based on the evolutionary change are represented in the form of a phylogenetic tree.
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BIOLOGY-TEXT
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- 7) 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_forwardBased on their anatomical and behavioral differences, biologists previously placed humans and chimpanzees in different families, but now DNA sequence data suggest that they are closely related and should be placed in the same family. What are some advantages of using DNA sequences to decide how to classify organisms? What might be some disadvantages?arrow_forwardHow do molecular biology explain the evolution of life?arrow_forward
- An organism dies,and its body leaves an impression in mud. Over time, the mud hardens into rock, and the impression becomes a fossil. Which kind of fossil was formed? A) cast B) mold C) original material D) trace fossilarrow_forwardWhich statement is usually true about phylogenetic trees? a) nodes represent points when traits have evolved b) branch tips that are next to each other are more closely related c) the branching pattern describes the hypothesized evolutionary relationships between the taxa d) the order of the branch tips (left to right) indicates which taxa are more advanced evolutionarilyarrow_forwardThe number of possible trees resulting from phylogenetic analysis grows exponentially with the number taxa, such that in a 22 taxon analysis there are more possible unrooted trees than there are stars in the universe. A) True B) False C) It depends on the inference method and optimality criteria used. D) Number of taxa and number of unrooted tree possibilities are unrelated in phylogenetic analysis.arrow_forward
- How did the prints become trace fossils?arrow_forwardHow can phylogenetics be used to reconstruct the evolutionary history of specific traits in a group of organisms?arrow_forwardWhy are human and chimpanzee DNA 96 percent similar? Please choose the best option.a) Both groups show similarities in their fossil record.b) Humans and chimpanzees share several similar traits such as the use of tools.c) These two species descended from a recent common ancestor.d) Natural selection has favored those particular genes in both humans and chimpanzees.arrow_forward
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