Concepts of Biology
1st Edition
ISBN: 9781938168116
Author: Samantha Fowler, Rebecca Roush, James Wise
Publisher: OpenStax College
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Textbook Question
Chapter 12, Problem 12RQ
A monophyletic group is a ______.
a. phylogenetic tree
b. shared derived trait
c. character state
d. clade
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A monophyletic group is a ________. a. phylogenetic tree b. shared derived trait c. character state d. clade
In a paraphyletic group
a. all species are more closely related to each other than they are to a species outside the group.
b. evolutionary reversal is common.
c. polyphyly also usually occurs.
d. some species are more closely related to species outside the group than they are to some species within the group.
A clade is_____ . a. defined by a derived character c. a hypothesis b. a monophyletic group d. all of the above
Chapter 12 Solutions
Concepts of Biology
Ch. 12 - Figure 12.3 In what levels are cats and dogs...Ch. 12 - Figure 12.8 Which animals in this figure belong to...Ch. 12 - What is a phylogeny a description of? a. mutations...Ch. 12 - What do scientists in the field of systematics...Ch. 12 - Which statement about the taxonomic classification...Ch. 12 - Which best describes the relationship between...Ch. 12 - Which best describes a branch point in a...Ch. 12 - Which statement about analogies is correct? a....Ch. 12 - What kind of trait is important to cladistics? a....Ch. 12 - What is true about organisms that are a part of...
Ch. 12 - Which assumption of cladistics is stated...Ch. 12 - A monophyletic group is a ______. a. phylogenetic...Ch. 12 - How does a phylogenetic tree indicate major...Ch. 12 - List the different levels of the taxonomic...Ch. 12 - Dolphins and fish have similar body shapes. Is...Ch. 12 - Describe maximum parsimony.Ch. 12 - How does a biologist determine the polarity of a...
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- A taxonomic group that contains species that have similar phenotypes due to convergent evolution is a. paraphyletic. b. monophyletic. c. polyphyletic. d. a good cladistic group.arrow_forwardOrganisms that are closer together on a cladograma. are in the same family.b. comprise an outgroup.c. share a more recent common ancestor than those organisms that are farther apart.d. share fewer derived characters than organisms that are farther apart.arrow_forwardA shared ancestral feature is a/an select one a. symplesiomorphy b.synapomorphy c.autapomorphyarrow_forward
- A taxon composed of all species derived from a common ancestoris referred to asa. a phylum.b. a monophyletic group or clade.c. a genus.d. an outgroup.e. all of the abovearrow_forwardWhat do scientists use to apply cladistics? a. homologous traits b. homoplasies c. analogous traits d. monophyletic groupsarrow_forwardButterfly wings and bat wings are ____ structures, while bird wings and bat wings are ____ structures. a. homozygous … heterozygous b. homologous … analogous c. analogous … phyllogenous d. analogous … homologousarrow_forward
- On a phylogenetic tree, the length of branches is a.) The comparison of homologous DNA and RNA sequences provided by Woese. b.) The separation of living organisms into three domains c.) The point in evolution when, based on scientific evidence, an ancestor is thought to have diverged to form two new species. d.) Proportional to the time elapsed since the split.arrow_forwardWhat is not always true of a valid binomial species name like Homo sapiens? A. It includes the genus name B. It is the first published name applied to the biological species C. It is defined by autapomorphic character states D. Technically, it consists of a noun and an adjective asaparrow_forwardPhylogenetic trees are based on a. natural selection. b. genetic drift. c. homology. d. none of the above.arrow_forward
- Three living species X, Y, and Z share a common ancestor T, asdo extinct species U and V. A grouping that consists of speciesT, X, Y, and Z (but not U or V) makes up(A) a monophyletic taxon.(B) an ingroup, with species U as the outgroup.(C) a paraphyletic group.(D) a polyphyletic group.arrow_forwardIn order to determine polarity for different states of a character a. there must be a fossil record of the groups in question. b. genetic sequence data must be available. c. an appropriate name for the taxonomic group must be selected. d. an outgroup must be identified.arrow_forwardA branch points on a phylogenetic tree is where scientists that study systematics place a groups organisms that share the formation of a new character. b organisms that have not yet diverged. c the emergence of a new genus. d the root of a phylogeny.arrow_forward
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