Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 17, Problem 12SQ
Match the evolution concepts.
| ____ gene flow | a. can lead to interdependent species |
| ____ sexual selection | b. changes in a population’s allele frequencies due to chance alone |
| ____ mutation | c. alleles enter or leave a population |
| ____ genetic drift | d. adaptive traits make their bearers better at securing mates |
| ____ coevolution | e. original source of new alleles |
| ____ adaptive radiation | f. burst of divergences from one lineage into many |
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1. ____ occurs when allele frequencies change over generation due to random chance.
a. extinction
b. gene flow
c. natural selection
d. mutation
Evidence that populations change in characteristics over time includes ___.
a.
Guppies transferred from ponds with predators to ponds without predators became more brightly colored
b.
drug resistance in bacterial diseases like tuberculosis becoming more common
c.
fruit flies in jars with alcohol in the food will increase in fast alcohol dehydrogenase alleles after a few generations
d.
Cholera outbreaks became more deadly after the industrial revolution when people started to live in crowded cities
e.
all of the above are examples of evolution
match the following:
______ Adaptation a. random change in allele frequencies in a population
______ Mutation b. trait that allows an organism to survive in their environment
______ Genetic Drift c. Surviving members have different allele frequencies
______ Founder Effect d. Variation, competition and adaptation are necessary
______ Population Bottleneck e. change in a base pair of DNA that may affect an individual’s fitness
______ Natural Selection f. Founding members of a population having unique allele frequencies
Chapter 17 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 17 - ___ is the original source of new alleles. a....Ch. 17 - Which is required for evolution to occur in a...Ch. 17 - Prob. 3SQCh. 17 - Prob. 4SQCh. 17 - The persistence of sickle-cell anemia in a...Ch. 17 - ___ tends to keep populations of a species similar...Ch. 17 - The theory of natural selection does not explain...Ch. 17 - Prob. 1DAACh. 17 - Prob. 2DAACh. 17 - Prob. 3DAA
Ch. 17 - Prob. 4DAACh. 17 - Which of the following is not part of how we...Ch. 17 - Sex in many birds is typically preceded by an...Ch. 17 - The difference between sympatric and parapatric...Ch. 17 - A fire devastates all trees in a wide swath of...Ch. 17 - Match the evolution concepts. ____ gene flow a....Ch. 17 - Change in allele frequency of a population is...Ch. 17 - Species have traditionally been characterized as...Ch. 17 - Rama the cama, a llama-camel hybrid, was born in...Ch. 17 - Two species or antelope, one from Africa, the...Ch. 17 - Prob. 4CT
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- ____tends to keep populations of a species similar to one another. a. Genetic drift c. Mutation b. Gene flow d. Natural selectionarrow_forward______is the original source of new alleles. a. Mutation c. Gene flow b. Natural selection d. Genetic driftarrow_forwardIt is likely that, ancestrally, pocket mice were light colored. The dark coloration evolved recently in populations on the young, dark lava flows. For the evolution of dark pocket mice to occur, there must have been A. some individuals in the ancestral population that had mutations that made them darker than other individuals B. a large population of dark pocket mice somewhere in the species range in the ancestral population nC. a mutation that turned all light colored mice into dark colored mice at once N D. a gradual darkening of light colored mice during their lifetime so that they could occupy the dark lava flowarrow_forward
- The difference between sympatric and parapatric speciation is_______ . a. parapatric speciation occurs only in velvet walking worms b. sympatric speciation requires a barrier to gene flow c. the extent of overlap in range d.reproductive isolation does not occurarrow_forwardChange in allele frequency of a population is called_____ . a. macroevolution c. inbreeding b. adaptive radiation d. microevolutionarrow_forwardIn many bird species, sex is preceded by a courtship dance. If a male’s dance is unrecognized by the female, she will not mate with him. This is an example of______ . a. sexual selection c. reproductive isolation b. behavioral isolation d. all of the abovearrow_forward
- Population A varies from population B. A toxonomist should designate them as separate species if _________. A. They are geographically isolated B. They differ in appearance C. They do not interbreed when the opportunity arises D. Gene flow has been observed E. All of these are correctarrow_forwardIf a populations allele and genotype frequencies remain constant from generation to generation, (a) the population is undergoing evolutionary change (b) the population is said to be at genetic equilibrium (c) microevolution has taken place (d) directional selection is occurring, but only for a few generations (e) genetic drift is a significant evolutionary forcearrow_forwardIf gene flow between two populations stops, which of the following could occur given enough time? a. speciation b. the population each gain unique alleles c. the timing of reproduction changes ending their ability to interbreed d. frequencies of alleles shift in different ways e. these are all things that could occur if gene flow between two populations of one species ended, given enough timearrow_forward
- Match Column A with Column B. The ultimate source of new alleles A. Mutation this force is causing a small percentage to the evolution process B. Natural selection most are lost due to chance or to detrimental effects on C. Genetic drift phenotype D. migration |In its absence, allele frequencies in different subpopulations will diverge Source of new alleles entering local population from other subpopulations v The movement of organisms among subpopulations - v Genotypes best suited to survive and reproduce in a particular environment of the offspring | The genotypes that promote survival are favored and contribute disproportionately to the offspring of the next generation known as evolutionary adaptation | The random, undirected changes in allele frequencies, especially in small populations.arrow_forwardThe Grants have studied finches on the Galapagos Islabds for 40+ years. During times of drought there is less green/flowering vegetation available as a good source for the finches. This leaves only the hard seeds. The grants have found that during drought, finches with larger beaks survive at a higher rate because they can access food source. This would be an example of ____ A.Selective pressure B. good genes hypothesis C. handicap principle D. population variationarrow_forward4arrow_forward
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