Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Textbook Question
Chapter 19, Problem 3RQ
What techniques might you use to determine whether the extinct cave bear is more closely related to a grizzly bear or to a black bear?
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What traits support classifying H. habilis and H. rudolfensis as separate species? (Use complete sentences. Minimum of 2 sentences.)
For each of the following sets of traits and descriptors, give the name of the most specific
primate taxon that possesses ALL of the given features. In other words, don't report a
suborder or superfamily name if a family or even a genus is sufficient to include all
primates sharing the three sets of traits. In each case, you will need to be no more specific
than the taxa I have asked you to know for the final exam.
1)
2)
3)
4)
post-orbital bar with no post-orbital closure
wet rhinarium
all members nocturnal
usually both prehensile hands & feet
forward facing eyes
retains the clavicle (collar bone)
fused frontal bone
no tail
IMI less than 100
brachiator anatomy
2:1:2:3 dental formula
ischial callosities
Suppose a new monkey species, Species A, has just been discovered. You are a primatologist, and you are trying to determine its phylogenetic position. You are sure its closest relatives are Species B and Species C, but you want to know which one it is more closely related to or if it is equally closely related to both. You are using Species D, a more distant relative, as the outgroup. You have come up with a list of ten characters you think will be useful in resolving this phylogeny, and you have determined the character state of each species for each character. The character states are: (in image below)
Estimate the phylogeny of these taxa by plotting the changes on each of the three possible phylogenies for species A, B, and C and determining which tree requires the fewest evolutionary changes.
HINT: First, review the carnivorans problem in Section 4.3 of the Zimmer and Emlen textbook. To solve the above problem, assume the outgroup has the ancestral character state for each…
Chapter 19 Solutions
Biology
Ch. 19.1 - Analysis of human chromosome 2 revealed that it...Ch. 19.1 - Origin of a Killer Analysis of nucleotide...Ch. 19.1 - explain why scientific names are necessary?Ch. 19.1 - describe the type of similarities that...Ch. 19.1 - Prob. 3CYLCh. 19.2 - Prob. 1TCCh. 19.2 - Prob. 1CYLCh. 19.2 - explain how scientists discovered that prokaryotes...Ch. 19.3 - Prob. 1HYEWCh. 19.3 - Prob. 1CYL
Ch. 19.3 - Prob. 2CYLCh. 19.4 - Prob. 1CYLCh. 19.4 - Prob. 2CYLCh. 19.4 - Prob. 1CTCh. 19 - Prob. 1MCCh. 19 - To be informative for reconstructing the phylogeny...Ch. 19 - Prob. 3MCCh. 19 - In modern systematics, classifications are...Ch. 19 - Which of the following includes all the domains...Ch. 19 - Prob. 1FIBCh. 19 - Prob. 2FIBCh. 19 - In Linnaean classification, the eight major...Ch. 19 - Systematists determine the evolutionary...Ch. 19 - Prob. 5FIBCh. 19 - The number of named species is about ________, but...Ch. 19 - What contributions did Linnaeus and Darwin make to...Ch. 19 - Prob. 2RQCh. 19 - What techniques might you use to determine whether...Ch. 19 - Only a small fraction of the total number of...Ch. 19 - In England, daddy longlegs refers to a long-legged...Ch. 19 - Why are species designations of asexually...Ch. 19 - Applying the Concepts The pressures created by...Ch. 19 - Applying the Concepts 2. During major floods, only...Ch. 19 - Consider the following list of groups: (1)...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- How do mechanisms of speciation, such as genetic isolation, reproductive barriers, and ecological factors, apply to the human-chimp-gorilla trichotomy? Discuss the role of these mechanisms in driving speciation and shaping the evolutionary relationships among humans, chimps, and gorillas, based on genetic evidence such as comparative genomics and molecular phylogenetics.arrow_forwardFor each of the following sets of traits and descriptors, give the name of the most specific Primate taxon that possesses ALL of the given features. In other words, don't report a suborder or superfamily name if a family or even a genus is sufficient to include all primates sharing the three sets of traits. In each case, you will need to be no more specific than the taxa I have asked you to know for the final exam. 1) suspensory anatomy (full 360° rotation in shoulder) Y-5 molar pattern fist walking partial post-orbital closure dry nose: nostrils with internal moist membranes all members are nocturnal 2) 3) fused frontal bone no external tail IMI less than 100 4) brachiator anatomy bribban. 2:1:2:3 dental formula ischial callositiesarrow_forwardHow, specifically, is the concept of ALLOMETRY relevant to the phylogenetic position of Homo floresiensis? Because if allometry explains the anatomy of Homo floresiensis then we can conclude that it is not separate species but instead a member of our species. Although most mammals on islands go through a process of getting smaller, Homo floresiensis evolved from a smaller ancestor to be bigger, meaning that allometry is an important factor. Mutations in the allometry allele are associated with many of the characteristics of Homo floresiensis. Because Homo floresiensis is so much smaller than other members of the genus Homo, it is important to determine how shape changes associated with smaller size impacted the species. Because Homo floresiensis had both small- and large-bodied forms, variation within the species is in large part dictated by allometry.arrow_forward
- In which ways could polar bears and grizzly bears be considered the same species? Give at least 3.arrow_forwardA phylogeny of 5 species of birds is shown below with values for three different phenotypic traits for each species shown in the rows above (e.g., species A has a wide, long beak and red tail, while species C has a narrow, very long beak and a green tail). DNA sequencing of tissue samples found buried in a freezer confirms that an extremely rare and reclusive species (D) is a sister species of E, but preserved samples of entire individuals of species D have been lost, the original collector of the samples has passed away, and no individuals of species D have subsequently been seen in the wild. In other words, we have no idea what species D looks like. Employing the principle of parsimony, which of the following conclusions is MOST appropriate for the likely values of these traits in species D? Beak width: wide wide ?? narrow narrow Beak length: long long ?? long very long Tail colour: red blue ?? green green A E a) wide beak, very long beak, green tail b) narrow beak, long beak, all…arrow_forwardIn which ways could polar bears and grizzly bears be considered different species? Give at least 3.arrow_forward
- The image shows two species of lizards. Phrynosoma cornutum (left) is found in North America and Moloch horridus (right) is found in Australia. These species are strikingly similar both in appearance and in behaviour, yet they are very distantly related. M. horridus is more closely related to chameleons than to P. cornutum while P. cornutum is more closely related to iguanas than to M. horridus. Both species live in similar environment (deserts) and have the same diet (ants). Which phenomenon most likely account for their similarities? Batesian mimicry convergent evolution resource partitioning frequency dependent selectionarrow_forwardHow can be Palawan bearcat commonly known as Palawan binturong or asian bearcats speciated?arrow_forwarda) Which species is more closely related to the Gray wolf, the Maned Wolf or the jackal (or are they equally related)? b) Which species is more closely related to the jackal, the Maned wolf or the South American foxes (or are they equally related)?arrow_forward
- Which node, 1-8, represents the most recent common ancestor of the Gray Wolf and the Domestic dog? Which node represents the most recent common ancestor of the Domestic Dog and the Red Fox? Which node represents the most recent common ancestor of the Coyote and the Swift Fox? Which node represents the most recent common ancestor of the Maned wolf and the Gray wolf?arrow_forwarda) What is the best estimate (mean age), in millions of years, for the divergence of the clade containing the American Giant Short Faced Bear from the clade containing the Sloth Bear? b) According to Figure 1, bears as a group experienced substantial evolutionary radiation near what geological boundary? c) True or False. An entire clade of bears has gone extinct because the two extinct bear species in the figure are sister species. d) What bears are the nearest relatives of the Sun Bear?arrow_forwardWhat traits support classifying H. habilis and H. rudolfensis as separate species?arrow_forward
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