Multiple ChoiceAnalysis of DNA from a variety of sources has led most researchers to agree that __________. 461views
Multiple ChoiceWhat was the earliest hominin to have an enlarged brain (relative to body size)? 446views
Multiple Choice__________ arose very early in hominid evolution; __________ evolved more recently. 505views
Multiple ChoiceWhich of the following correctly lists probable ancestors of modern humans from the earliest to the most recent? 574views
Multiple ChoiceHumans and lorises share many traits that probably evolved in our early primate ancestors; one such trait is __________. 491views
Textbook QuestionWhich of the following is not a property of DNA polymerase? a. It adds dNTPs only in the 5'→3' direction. b. It requires a primer to begin synthesis. c. It opens the two strands of DNA at the replication fork. d. Its exonuclease activity is involved in proofreading.628views
Textbook QuestionIn the primate phylogenetic tree below, fill in groups (a)–(e). Of the groups, which are anthropoids and which are apes? a. b. c. d. e. 526views
Textbook QuestionWhat is the function of primase? a. synthesis of the repetitive, short double-stranded DNA sequences required by DNA polymerase b. synthesis of a short RNA strand that is complementary to single-stranded DNA c. closing the gap at the 3′ end of DNA after excision repair d. removing primers and synthesizing a short section of DNA to replace them629views
Textbook QuestionMost species of hominins are known only from Africa. Which species have been found in other parts of the world as well? a. early Homo—H. habilis and H. ergaster b. H. erectus, H. neanderthalensis, and H. floresiensis c. gracile australopithecines d. robust australopithecines815views
Textbook QuestionAs hominins diverged from other primates, which of the following appeared first? a. reduced jawbones b. an enlarged brain c. the making of stone tools d. bipedal locomotion448views
Textbook QuestionFossils suggest that the first major trait distinguishing hominins from other primates was a. a larger brain. b. erect posture. c. forward-facing eyes with depth perception. d. tool making.533views
Textbook QuestionWhich of the following correctly lists possible ancestors of humans from the oldest to the most recent? a. Homo erectus, Australopithecus, Homo habilis b. Australopithecus, Homo habilis, Homo erectus c. Australopithecus, Homo erectus, Homo habilis d. Homo ergaster, Homo erectus, Homo neanderthalensis489views
Textbook QuestionWhich of these is not a member of the anthropoids? a. chimpanzee b. tarsier c. human d. New World monkey524views
Textbook QuestionWhat aspect of DNA structure makes it possible for the proteins of nucleotide excision repair to recognize many different types of DNA damage? (a) the polarity of each DNA strand729views
Textbook QuestionStudies of DNA support which of the following? a. Members of the group called australopiths were the first to migrate from Africa. b. Homo sapiens originated in Africa. c. Sahelanthropus was the earliest hominin. d. Chimpanzees are more similar to gorillas and orangutans than to humans.455views
Textbook QuestionDraw a phylogeny of major populations of modern humans that would reject the out-of-Africa hypothesis.381views
Textbook QuestionThe earliest members of the genus Homo a. had a larger brain compared to other hominins. b. probably hunted dinosaurs. c. lived about 4 million years ago. d. were the first hominins to be bipedal.886views
Textbook QuestionHumans possess which of the following traits? Select True or False for each trait. T/F triploblasty T/F parthenogenesis T/F viviparity T/F metamorphosis309views
Textbook QuestionGenetic diversity in living human populations is highest in Africa and decreases as a function of distance traveled by the human migration that left Africa many millennia ago. Draw a graph to show this trend. (Hint: What is the independent variable? What is the dependent variable? What kind of graph is appropriate for this kind of data? Add a label where you would expect to find a data point for the Yanomamö tribe of the Amazon rain forest in South America. Why is it important to use indigenous people for this study?475views
Textbook QuestionOne of the misconceptions about human evolution is expressed in the question 'If chimpanzees were our ancestors, then why do chimpanzees still exist?' Use Figure 19.10A to explain the answer. 697views
Textbook QuestionWhat adaptations inherited from our primate ancestors enable humans to make and use tools?513views
Textbook QuestionSummarize the hypotheses that explain variation in human skin color as adaptations to variation in UV radiation.495views
Textbook QuestionExplain some of the reasons why the human species has been able to expand in number and distribution to a greater extent than most other animals.618views
Textbook QuestionAnthropologists are interested in locating areas in Africa where fossils 4–8 million years old might be found. Why?436views
Textbook QuestionSCIENTIFIC THINKING By measuring the fossil remains of Homo floresiensis, scientists have estimated its weight to be around 32.5 kg and its brain volume to be roughly 420 cm3. Plot these values on the graph in Figure 19.13A. Which hominin has the most similar relationship of brain volume to body mass? Does this information support the hypothesis that H. floresiensis is a dwarf form of H. erectus, or an alternative hypothesis? Explain. 634views
Textbook QuestionMost species of hominins are known only from Africa. Which species have been found in other parts of the world as well?a. early Homo—H. habilis and H. ergasterb. H. erectus, H. neanderthalensis, and H. floresiensisc. Australopithecus afarensis
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