 1 Show The first person to classify animals in a way that is still used today was 2 Which of the following terms is related to cladistics? 3 In the Linnaean system of naming, a single species is identified by a binomial, which consists of the following two parts: 4 The source of information about relationships that comes from the study of anatomy is called 5 The current status of taxonomy is in transition. It is changing from a focus on _________ toward a focus on 6 While there are many criteria to describe the difference between two species, the biological definition of a species is based on being part of 7 The biological definition of a species is only one of two currently used definitions for the term species; the other definition is the 8 Birds have wings, as do beetles. However, they do not share a recent, common ancestor. Therefore the possession of wings is known as 9 Comparative biochemistry compares the sequences of amino acids in proteins as well as _____________ to identify characters used to construct cladograms. 10 Phylogenetic systematics was first proposed by 11 Two different monophyletic groups that share common ancestry with each other more recently than either does with other taxa are known as 12 The species concept includes all of these ideas, with the exception of 13 In Lake Baikal, there exists the world's only freshwater seal. It lives nowhere else. This is an example of 14 The science of cladistics produces a system for naming and classifying organisms. 15 Linnaeus was the first biologist to classify organisms. 16 The broadest categories in the system of classification, below kingdoms, are called phyla. 17 The only taxonomic unit that is written entirely in lower case letters is the genus. 18 When all the organisms in one taxon come from a single common ancestor, the taxon is considered to be monophyletic. 19 Phyla, classes, and families are known as taxa. 20 The hierarchical rankings within the animal kingdom are: phylum, order, class, family, genus, and species. 21 A genus name of an animal cannot be used for more than one group of organisms, but the species epithet may be used for unrelated organisms. 22 Humans, as well as other apes have opposable thumbs. Because we share a common ancestor, this character shows homology. 23 A derived character shared by members of a clade is called a symplesiomorphy. 24 The branching diagram that shows the nested hierarchy of clades is a phylogenetic tree. 25 From a cladistic perspective, the term reptile would include both lizards and birds. 26 Although evolutionists do not follow the typological species concept, type specimens are still used when describing a new species. 27 One of the problems with the biological species concept is that it only applies to organisms that reproduce asexually. 28 Linnaeus was the first to propose the evolutionary species concept. 29 The phylogenetic species concept includes sexually and asexually reproducing organisms and includes polyphyletic groups. 30 Whittaker proposed a five-kingdom scheme, although more recently evidence suggests that the kingdom Monera should be split into two separate kingdoms. Which kinds of character states Synapomorphies or Symplesiomorphies are most useful for reconstructing phylogenies explain why?Symplesiomorphies are not informative or useful when one is trying to separate a large group of organisms into smaller, less inclusive groups. Synapomorphies are informative and useful when one is trying to separate a large group of organisms into smaller, less inclusive groups.
What is true of shared derived characters?A shared character is one that two lineages have in common, and a derived character is one that evolved in the lineage leading up to a clade and that sets members of that clade apart from other individuals. Shared derived characters can be used to group organisms into clades.
What are groups of organisms that share a common ancestor called?If a group of organisms is believed to have shared a common ancestor, the group containing that ancestor and all of its descendants is called a monophyletic group. A monophyletic group must be recognized by the presence of at least one shared derived character.
What of the following is used to determine phylogeny?So the correct answer is ' r-RNA'.
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True or false: symplesiomorphies are useful for describing relationships within a group.
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