Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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List two possible hypotheses for why human head lice diverged evolutionarily from chimpanzee lice:
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List two possible hypotheses for why human head lice diverged evolutionarily from chimpanzee lice:
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- Brown et al. and Morwood et al. reported in 2004 that they had found skeletal remains of a previously unknown type of hominin, now dubbed Homo floresiensis, on the Indonesian island of Flores. These hominins were small (approximately 1 m tall) with small braincases (approximately 380 cm3) as compared with other hominins. The remains of H. floresiensis were found alongside handmade stone tools and the remains of dwarf elephants that also inhabited the island, suggesting that H. floresiensis was able both to make tools and to coordinate the hunting of animals much larger than itself. H. floresiensis is estimated to have lived at the site where the remains were found from 700,000 years ago to 60,000 years ago. Which would be the most feasible method of figuring out to which other hominin species H. floresiensis was most closely related? Compare the average body size of H. floresiensis to that of each of the other hominin species. Compare the type of prey hunted by H. floresiensis to that…arrow_forwardWhat is the phylogenetic relationship between Homo heidelbergensis, H. sapiens, and H. neanderthalensis?arrow_forwardWhich of the following early hominins exhibits the most morphological similarities with the last common ancestor of humans and chimpanzees? a. Orrorin tugenensis b. Sahelanthropus tchadensis c. Australopithecus anamensis d. Ardipithecus ramidusarrow_forward
- Given the distribution of Hox genes among animals, what would you predict about the number and type of Hox genes in the common ancestor of all animals?arrow_forwardDo you think Paranthropus and Homo interacted? What is your evidence?arrow_forwardWhat does the regional variation in archaic Homo sapiens represent in terms of the broader story of our species evolution?arrow_forward
- If phenotype is a proxy for genotype, then why do you think that paleoanthropologists erroneously designated Neandertalensis as a separate species prior to the accessibility of DNA analysis? What were they comparing them to when they were lumping or splitting fossils taxonomically and why would these reference populations provide the bias resulting in such a confounding factor in their assessments?arrow_forwardWhich of the following best describes the evolution of smell in chordates? A) Ancestrally, jawless fish had few ancestral scent genes that coded for receptors resembling a combination of water and air receptors. Subsequently these genes were duplicated and specialized through natural selection either for use in water or air. B) Ancestrally, all olfactory receptors where specialized for water as the ancestor of all vertebrates was aquatic. Only once did olfactory genes become duplicated and specialized and this was in the transition to land for receptors that work in air. C) All chordates share the same number of scent receptor genes. However, they have become variously deactivated through natural selection due to either unuse or a tradeoff for sight genes. D) None of the above.arrow_forwardOld and New World Monkeys diverged from a common ancestor approximately 10 million years ago. True or false?arrow_forward
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