Historically, whales and hippos have been classified in different orders: Cetacea and Artiodactyla, respectively. Recent molecular evidence, however, indicates that whales' closest living relatives are hippos. This has caused some zoologists to lump the two orders together into a single clade, the Cetartiodactyla. However, it remains unclear whether the whale lineage diverged from the hippo lineage before or after other members of Order Artiodactyla diverged. The cladograms below show these two possibilities. Considering only whales and hippos, which cladogram shows these two groups positioned in the same clade? "Within" Phylogenetic Tree "Without" Phylogenetic Tree Whales Whales Hippos Hippos Other Pigs artiodactyls Other Pigs artiodactyls O The "without" phylogenetic tree O The "within" phylogenetic tree

Historically, whales and hippos have been classified in different orders: Cetacea and Artiodactyla, respectively. Recent molecular evidence, however, indicates that whales' closest living relatives are hippos. This has caused some zoologists to lump the two orders together into a single clade, the Cetartiodactyla. However, it remains unclear whether the whale lineage diverged from the hippo lineage before or after other members of Order Artiodactyla diverged. The cladograms below show these two possibilities. Considering only whales and hippos, which cladogram shows these two groups positioned in the same clade? "Within" Phylogenetic Tree "Without" Phylogenetic Tree Whales Whales Hippos Hippos Other Pigs artiodactyls Other Pigs artiodactyls O The "without" phylogenetic tree O The "within" phylogenetic tree

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter32: Deuterostomes: Vertebrates And Their Closest Relatives

Section: Chapter Questions

Problem 1ITD: The phylogenetic tree for vertebrates depicted below was constructed from sequence data for two rRNA...

See similar textbooks

Similar questions

The phylogenetic tree for vertebrates depicted below was constructed from sequence data for two rRNA mitochondrial genes (12S and 16S). How do the results of this analysis compare with the phylogenetic trees in Figures 32.10 and 32.24? Identify the major clades of vertebrates on the tree depicted below. Source: R. Zardoya and A. Meyer. 1998. Complete mitochondrial genome suggests diapsid affinities of turtles. Proceedings of the National Academy of Sciences, USA 95:1422614231. Copyright 1998 National Academy of Sciences, U.S.A.
Amphioxus long has been of interest to zoologists searching for a vertebrate ancestor. Explain why amphioxus captured such interest and how it is different from the hypothesized most recent common ancestor of all vertebrates.
Which of the following data sets is the one that scientists had to evaluate carefully since it made the artiodactyl phylogenetic tree less parsimonious? DNA sequence similarity between hippos and whales was the highest compared to other artiodactyls fossil evidence of animals that had traits of both whales and land mammals anatomical comparison between whales, other mammals, and fish presence of an astragalus bone in artiodactyls but not whales
Which of the following taxa of fish shared most direct common ancestry with the group of animals that evolved into the terrestrial tetrapods? -Subclass Elasmobranchii -Class Neopterygii -Subclass Sarcopterygii -Class Actinopterygii -Class Chondrichthyes
Select clades from the list provided below to show a legitimate evolutionary path that led to the evolution of the blue-headed wrasse. The clades are listed in alphabetical order. Include all clades to which this species belongs. Ignore the clades to which this species does not belong. I started by writing the broadest two clades that apply (see below). Actinopterygii Chondrichthyes Chordata Cyclostomata Gnathostomata Osteichthyes Sarcopterygii Teleostei Tetrapoda Vertebrata
Rotifers and acanthocephalans previously belonged to separate phylum. But recent molecular studies and genome analysis show that acanthocephalans are sister groups of a class under Phylum Rotifera. And thus, the two should belong to a single taxon. Aside from the molecular evidences, what morphological and physiological features of both the rotifers and acanthocephalans support this claim? Explain your answer.
How has the abundance and diversity of Bivalves clade changed over time? –How did the synapomorphies of the clade allow the group to diversify and expand? Has the clade been affected by mass extinction events, either positively or negatively? If so, what caused the extinction event? Is the clade now at its most diverse and abundant? Or if that was in the past, when? If still extant, are species in the clade thriving or threatened with extinction?
Why are “reptiles,” as traditionally defined, a paraphyletic group? How has cladistic taxonomy revised Reptilia to make it monophyletic?
Prehensile tails are seen in certain primate species in which taxonomic group? Group of answer choices Platyrrhine Strepsirrhine Hominoid Cercopithecoid
Four Caribbean islands with similar environmental conditions have three different species of anole lizards with specific ecological morphotypes. Lizards Morphotypes Grass lizards Long tails Canopy lizards Large toe pads Twig lizards Short legs Researchers devised two phylogenetic trees to represent two different hypotheses about how the lizards may have evolved. The first hypothesis is that the different body types evolved repeatedly and independently of each island. The second suggests that each morphotype evolved once and spread to different islands. Which of the following statements best explains which type of data the researchers should use to test these two hypotheses, and which phylogenetic tree correctly shows the evolutionary relationships among anoles? Analyzing DNA samples from the anoles would likely show that phylogenetic tree B is correct since it is likely that each body type evolved once and spread to different islands. Analyzing the…
Molecular sequence data indicate that Xenoturbella is a deuteros-tome. Are there corresponding morphological characters?
Amphioxus long has been of interest to zoologists searching for a vertebrate ancestor. Explain why amphioxus captured such interest and why it no longer is considered to resemble closely the direct ancestor of the vertebrates.