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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Textbook Question
Chapter 17, Problem 13SQ
Change in allele frequency of a population is called ______ .
- a. macroevolution
- b. adaptive radiation
- c. inbreeding
- d. microevolution
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The persistence of sickle-cell anemia in a population with a high incidence of malaria is a case of______ . a. bottlenecking c. the founder effect b. inbreeding d. a balanced polymorphism
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
Rate of evolution by selection is highest for an allele when it is _________ .
a. wild type
b. recessive
c. dominant
d. co-dominant
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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- Population genetics is the study of ________. a. how allele frequencies in a population change over time b. populations of cells in an individual c. the rate of population growth d. how genes affect embryological developmentarrow_forward______is the original source of new alleles. a. Mutation c. Gene flow b. Natural selection d. Genetic driftarrow_forward1b.) Which is NOT commonly an effect of inbreeding in a population? a. an increase in the frequency of homozygous dominant individuals b. an increase in the frequency of homozygous recessive individuals c. an increase in the frequency of recessive genetic diseases d. better health and fertility of inbreds lines compared to lines that are not inbred.arrow_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_forwardit is believed that the cystic fibrosis (CF) gene conferred protection to carriers during the cholera epidemics of the Middle Ages. The CF gene frequency would be expected to do what in those populations? become sex-linked recessive b. decrease c. stay the same d. increasearrow_forwardGenetic drift can be defined as Group of answer choices A. accidental changes in DNA structure b.how lazy loci evolve c. random change in allele frequency over time D. differences in fitness between allelesarrow_forward
- A population of gophers is very isolated, so no individuals can move in/out of the population. It is very small, so random events affect allele frequencies and many traits are under strong selection. Males are chosen randomly. Which statement is correct? A. Allele frequencies in 10 generations will be different than they are today. B. Individual gophers are evolving traits they need to survive C.Genetic drift is not acting on the gophers D. The population is in Hardy-Weinberg equilibriumarrow_forwardDarwin’s First Clues included _______. a. he saw two different species of flightless bird living in different parts of South America when he would have predicted only one b. armadillos taste like duck c. moths in dark forests become darker over time d. Alleles for sickle cell are more common where stored grains can go badarrow_forwardIn the universal ABO blood grouping system, there are four phenotypes—A, B, AB, and O—which are determined by three different alleles. The presence of three alleles in the ABO blood grouping system is an example of ____. a. a polymorphism b. the bottleneck effect c. genetic drift d. a dimorphism e. the founder effectarrow_forward
- Which of the following statements describes an example of genetic drift?a. Allele g for fat production increases in a small population because birds with more bodyfat have higher survivorship in a harsh winter.b. Random mutation increases the frequency of allele A in one population but not inanother.c. Allele R reaches a frequency of 1.0 because individuals with genotype rr are sterile.d. Allele m is lost when a virus kills all but a few individuals and just by chance, none ofthe survivors possess allele m.arrow_forwardThere is a population of cats and 16% of the cats this population show a recessive trait. a. What is the frequency of the recessive allele? b. What is the frequency of the dominant genotype? c. What is the frequency of cats with the heterozygous genotype?arrow_forwardA population of bats becomes isolated after colonizing an island, developing a high incidence of a negatively-impacting recessive genetic disorder not present in the original population they diverged from, or in the bats that originally colonized the island. What is the likeliest cause? a. Genetic drift b. Gene flow c. Founder effect d. Natural selectionarrow_forward
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