Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Chapter 23, Problem 7SQ
In _____________, new species of a lineage move into a wide range of habitats by way of bursts of microevolutionary events.
- a. an adaptive radiation
- b. natural selection
- c. genetic drift
- d. punctuated equilibrium
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The process in which environmental pressures result in the differential survival and reproduction of individuals of a population is called_____ . a. catastrophism c. natural selection b. evolution d. genetics
The fossil record shows how ________________
a. dead organisms were buried
b. organisms have changed over time and when organisms lived on Earth
c. parents of the offsprings
d. evolution occurred
The _________________ model proposes that modern humans are the most recent morphological form in a species that has been around for nearly 2 million years.
a. Multiregional Evolution (MRE)
b. Multiple Dispersal (MD)
c. Recent African Origin (RAO)
d. Recent African Origin-HYbrid(RAO-H)
Chapter 23 Solutions
Human Biology (MindTap Course List)
Ch. 23 - Prob. 1RQCh. 23 - As shown in Figure 23.25, there is considerable...Ch. 23 - Prob. 3RQCh. 23 - Prob. 4RQCh. 23 - Prob. 5RQCh. 23 - Prob. 6RQCh. 23 - Prob. 1SQCh. 23 - The relative numbers of different genes (alleles)...Ch. 23 - A difference in survival and reproduction among...Ch. 23 - The fossil record of evolution correlates with...
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- If two mouse populations do not interbreed but are found in the same area, they may form different species due to d. Adaptive radiation c. Spontaneous generation a. Geographic isolation b. Mutations OOOOarrow_forwardThe _____________ hypothesis for protein variation posits that natural selection is important in maintaining variation. a. neutral mutation b. balance c. directional d. geneticarrow_forwardWhich of the four evolutionary mechanisms make a population better adapted to its environment? A. Migration B. Genetic drift C. Mutations D. Natural selection. arrow_forward
- The 3.6-million-year-old footprints left by bipedal walkers in Tanzania were probably made by_____ . a. australopiths c. modern humans b. Neanderthals d. Homo erectusarrow_forwardAccording to "The Complex Evolution of Homo sapiens", what happened to large animals in the areas where our species migrated? A.They died out soon after we migrated into their area B.We domesticated them soon after we migrated into their area C.Nothing happened to large animals when we migrated into their territories D.They increased in number soon after we migrated into their areaarrow_forward89. Natural selection can best be described as _________. A. differential survival and/or reproduction among heritable entities B. macroevolutionary change C. microevolutionary change which results in new species D. none of the above describe natural selectionarrow_forward
- A physical barrier separates a single species, causing two separate populations to form. Over time these two populations adapt to their environments. Eventually, these two populations are no longer able to successfully reproduce with each other. This is known as __________. A. Sympatric speciation B. Allopatric speciation C. Autopatric speciation D. Parapatric speciationarrow_forwardAccording to "The Complex Evolution of Homo sapiens", what happened to large animals in the areas where our species migrated? A.Nothing happened to large animals when we migrated into their territories B.They increased in number soon after we migrated into their area C.They died out soon after we migrated into their area D.We domesticated them soon after we migrated into their areaarrow_forwardName Date 4. (5:17) Which of the following correctly describes a principle of natural selection? A. Variation in phenotype is what distinguishes one species from another. B. Individual members of a species are only able to pass down favorable traits. C. Populations produce more offspring than the environment can support. D. Only individuals that don't have unfavorable traits are able to reproduce. 5. (5:59) Which of the following is key to Darwin's theory? A. Individuals evolve over their lifetime as their environments change. B. Species evolve over generations as certain individuals reproduce. C. Humans evolve over their lifetime while animals evolve over generations. 6. (10:13) In your own words, explain the difference between directional selection, stabilizing selection, and disruptive selection. 7. (11:24) In your own words, explain how sexual selection also contributes to evolution. 8. (12:21) What is one question you still have about natural selection?arrow_forward
- The fossil record shows that in just the last 600 million years, there have been five instances of sharp decreases in the diversity and abundance of living organisms. what are these events? a. droughts b. mass extinctions c. reversals of the earth's magnetic field d. great migrationarrow_forwardmountain range separates a population of gorillas. After many generations, the gorillas on different sides of the mountain range cannot produce viable, fertile offspring. What has happened? a. Sympatric speciation c. Parapatric speciation b. Allopatric speciation d. Adaptive radiationarrow_forwardWhich term can most accurately be used to describe evolutionary change that leads to speciation? A. microevolution b. macroevolution c. sexual selection d. natural selection e. reproductive isolationarrow_forward
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