The researchers wish to increase the reliability of their experimental observations before investigating new claims that chemotherapy-resistant tumors are an example of continuing evolution. A captive population of cheetahs kept in a confined area will have a greater risk of contracting and passing on a virus. Because the mice are highly inbred, they are essentially identical to one another. Which of the following would most likely represent the types of individuals found in one of the species resulting from shape becoming a prezygotic isolating mechanism in the initial population represented in Figure 1 ? Find an equation of the tangent plane to the given surface at the specified point. The original habitat had many available unoccupied ecological niches that were colonized by populations of the original species. Geographic isolation will create separate gene pools, leading to speciation over time. Convergent evolution, because these organisms do not share a recent common ancestor. A group of scientists found that in one population the frequency of the M allele was 0.82, and the frequency of the N allele was 0.18. Figure 1 describes a possible scenario, known as the RNA World Hypothesis, that could have led to the evolution of our modern-day genetic material. D. The frequency of both alleles will increase because the population will enter a period of rapid growth. a) filtering blood of harmful substances. Which of the following statements best predicts the result of a comparison between the fossils found before and after the period of rapid change? D. A mixture of ribonucleotides such as adenine and uracil will spontaneously form single-stranded chains of RNA. WebUnit 7 Progress Check: MCQ Part B 3.5 (202 reviews) Which of the following sets of data provides evidence that best supports common ancestry for organisms in all three C. Most of the species found in the first static period will be absent in the second static period. C. The original habitat contained many predators, and the species diversified in order to avoid extinction. Cells with flagella were better able to find food and escape predators. B. Continue treating the three insect populations with the same insecticides and determine whether their efficiencies decline significantly after several generations. By 1940, most genetic variation for speed had been lost from the gene pool. WebAp Bio: Unit 7 Progress Check: MCQ describes how the L. clathratus population would be affected? C. Organisms in Bacteria, Archaea, and Eukarya each have adenine, thymine, guanine, and cytosine bases forming their DNA. They found that although all 12 populations were exposed to the same environmental pressures, each population had differentiated from one another genetically after 10,000 generations. The plant species will flower earlier in the spring in response to rising temperatures before the arrival of the pollinators, so seeds will not be produced. A. A. A. One group is given food with an added substance that is known to be a mutagen. A scientist wishes to provide experimental evidence to support the model shown in Figure 1 by demonstrating the ability to synthesize an RNA molecule. D. Mice utilized the 5-TTAGGG-35-TTAGGG-3 telomeric repeat sequence first, but the sequence independently evolved in humans as well. C. Humans and mice share a recent common ancestor that had the 5-TTAGGG-35-TTAGGG-3 repeat sequence in its telomeres. The frequency of the MC1RDMC1RD allele will decline due to natural selection. B. The allele for the peppered trait, being recessive, decreased in frequency. The increased air pollution of the nineteenth century due to the use of coal led to a darkening of surfaces from soot. Ap biology unit 1 test answers - anfk. A. Over time, populations A and B developed into two distinct species. A. Scientists want to determine the age of | Course Hero. The animals in population A were exposed to different predators and had to modify their fur color to be better camouflaged. A. A scientist maintains a large population of the fruit fly Drosophila affinis in the laboratory. Humans and mice have the same number of chromosomes. Which of the following best explains the phenotypic pattern in the moths over time? D. The original habitat was tropical, which increased the rate of mutation and led to rapid diversification. A scientist maintains a large population of the fruit fly Drosophila affinis in the laboratory. During the last few decades, tall buildings have been built around the woodlot, and species 3, 4, and 5 are shadeintolerant plants. The population was predominantly black throughout the nineteenth century. A thermometer requires 1 min to indicate 98% of the response to a step input. Dr. Sidney Fox wished to add to the heterotroph hypothesis of the origin of life by synthesizing simple proteins from a mixture of amino acids. Assuming that the population is in HardyWeinberg equilibrium, which of the following is the expected frequency of individuals with the genotype MNMN? The frequency of the MC1RD allele will decline due to natural selection. The increased air pollution of the nineteenth century due to the use of coal led to a darkening of surfaces from soot. Which of the following is closest to the frequency of the MC1RD allele in the Tule Mountain population. To test their claim, they monitored 12 populations of E. coli for 10,000 generations under the same environmental conditions. To test their claim, they monitored 12 populations of E. coli for 10,000 generations under the same environmental conditions. The liver helps the circulatory system by _________. Cells with nuclear membranes were better able to protect their genetic material against damage. A. Natural selection acted on variation that was present in both populations A and B, and the lack of gene flow eventually led to the formation of two new species. provided unique evolutionary advantages to the last eukaryotic common ancestor? D. During the last few decades, tall buildings have been built around the woodlot, and species 3, 4, and 5 are shadeintolerant plants. A. Convergent evolution, because these organisms do not share a recent common ancestor. Which of the following best predicts the impact on the lizard species if there is a gradual increase in the average temperatures found in both the lowlands and mountains in this region? C. Start each population with bacterial cells that have different genotypes to make sure there is enough genetic variation for selection to occur. Scientists studying the fossils observed patterns of changing shell shape in the mollusks. B. Even though there are numerous mountains in the region, the climate on the mountains is too cold for the lizards to survive. Ca2+^{2+}2+, The following elements are among the five most abundant by mass in the Earth's crust, seawater, and atmosphere except, (a) oxygen Which of the following best explains the mechanism that caused this speciation event in the giant kangaroo rats of population A? Continue treating the three insect populations with the same insecticides and determine whether their efficiencies decline significantly after several generations. Graph that starts at 5.0 cm and ends at 9.0 cm. WebAP Biology Unit 7 Evolution MCQ Questions 8.pdf - AP Biology Scoring Guide Unit 7 Progress Check: MCQ Part A 8. Which of the following statements includes a reasonable refinement that researchers could use in repeating the experiment? A. D. The lizards will hybridize with a different lizard species that is adapted to a warmer environment, leading to increased genetic variation in the species. Which of the following is closest to the frequency of the MC1RDMC1RD allele in the Tule Mountain population? Some scientists propose that due to human activity and climate change, a sixth mass extinction has already begun. If geologic events lead to a series of new mountain ranges that divide the plateau into several discrete valleys, which of the following best describes how the L. clathratus population would be affected? Click the card to Which of the following best illustrates the change in the frequencies of the A and a alleles from generation 1 to generation 2 and to future generations, assuming Hardy-Weinberg equilibrium is present after generation 1 ? Suppose the average concentration of SO2\mathrm{SO}_{2}SO2 is measured to be 400g/m3400 \mu \mathrm{g} / \mathrm{m}^{3}400g/m3 at 25C25^{\circ} \mathrm{C}25C and 1 atm. Natural selection acted on variation that was present in both populations A and B, and the lack of gene flow eventually led to the formation of two new species. For a specific bike plus rider of total mass 78kg78 \mathrm{~kg}78kg, FD14.0NF_{\mathrm{~D} 1} \approx 4.0 \mathrm{~N}FD14.0N; and for a speed of 2.2m/s,FD21.0N2.2 \mathrm{~m} / \mathrm{~s}, F_{\mathrm{~D} 2} \approx 1.0 \mathrm{~N}2.2m/s,FD21.0N. Find at what slope angle \theta the bike and rider can coast downhill at a constant speed of 8.0m/s8.0 \mathrm{~m} / \mathrm{~s}8.0m/s. Two flat steel bars are supposed to be connected together by a pin at BBB, and the system is supposed to be stress free after the pin is inserted (see Fig.given). The researchers determined that the East lava flow population is not in Hardy-Weinberg equilibrium. In a certain small mammal, fur color is controlled by a pair of alleles, with B being dominant over b. Continue treating the three insect populations with the same insecticides and determine whether their efficiencies decline significantly after several generations. The degrees of relatedness in several native populations of prairie chickens in Marion and Jasper Counties in Illinois were determined. C. Dark color is selected for in mice from the West, Mid, and East Populations. HardyWeinberg equilibrium, which of the following is the expected frequency of individuals with the genotype MN? Which of the following best explains the divergence in morphology in the birds? A dark coat color provides camouflage to mice on the lava flow rocks; therefore, mice with dark coats have a lower predation rate in that habitat. In an experiment, the scientist creates two groups of twenty highly inbred mice. Iridium is an element that is rare on Earth but commonly found in meteorites. By the end of the twentieth century, the peppered version of the moth was again more common than the black version. D. Bacteria and eukaryotes use different mRNA codons for the same amino acids during translation. Add an additional treatment group to the experiment to measure the effectiveness of another insecticide (Insecticide #3) over several generations. Increasing the number of trials and the number of mice in each treatment group. By the end of the twentieth century, the peppered version of the moth was again more common than the black version. B. Specimen 2 Organisms in Bacteria, Archaea, and Eukarya each have adenine, thymine, guanine, and cytosine bases forming their DNA. If a fire caused the surface of the ground in the habitat of the species to become darker in color, which of the following claims about the impact on the allele frequencies in this population is most reasonable? D. In the presence of available energy and the absence of a significant quantity of atmospheric O2O2 simple proteins will form spontaneously from a mixture of amino acids. College Board AP Classroom Unit 7 Progress Check: MCQ Part C Qichen (1 of 18 ) Question 1 Two community service Some lizards will migrate to new habitats in the mountains and become isolated, leading to allopatric speciation. The frequency of homozygous recessive individuals will increase because light-colored fur absorbs less heat. John David Jackson, Patricia Meglich, Robert Mathis, Sean Valentine, David N. Shier, Jackie L. Butler, Ricki Lewis. Which of the following best describes what occurred during the periods indicated by the arrows? Which of the following statements includes a reasonable refinement that researchers could use in repeating the experiment? After 20 generations of allowing this population of about 1000 flies to mate randomly, 10 females and 10 males were isolated from the rest of the population. The model is shown in Figure 1. C. Cells with ribosomes were better able to produce proteins needed for a variety of metabolic functions. Webanswer choices. Which of the following would be an appropriate alternative hypothesis? Which of the following best explains why the population is not in Hardy-Weinberg equilibrium? A population geneticist is conducting an investigation on a population of mice. Which of the following best predicts why humans and mice have identical telomeric repeat sequences? Which of the following best predicts the effect of the enclosure on the O'Neill population? A scientist is studying the impact of mutagens on genetic variation in mice. Click the card to flip Geographic isolation will create separate gene pools, Relationships of selected organisms based on catalase structure. C. A pool of amino acids can spontaneously form into singlestranded RNA, which would then code for proteins. The current global warming trend is placing new selective pressures on the species involved in these relationships. Henslow's sparrow populations came to a peak in the mid1900s. There are two species of elephant seals: northern elephant seals, Mirounga angustirostris, found off the western coast of North America from Baja California to the Gulf of Alaska, and southern elephant seals, M. leonina, found in the southern oceans. A group of researchers claim that chance events play an important role in the evolution of populations. The frequency of the BB allele will increase because light-colored individuals will be more visible to predators. E1=E2=200GPa,1=2=12106/CA1=25mm2,A2=50mm2,L1=3m,L2=5m,=1mm. Facts about the test: The AP Biology exam has 60 multiple choice questions and you will be given 1 hour A scientist is studying the impact of mutagens on genetic variation in mice. \end{gathered} The animals in population A were reproductively isolated from those in populations B, C, and D. Which of the following statements best predicts the result of a comparison between the fossils found before and after the period of rapid change? Students created a model showing one possible mechanism for speciation in which a geographic barrier separated one large population into two smaller populations, A and B. The results of breeding programs can be seen in the change in winning times of the Kentucky Derby from 1880 to the present, as shown in Figure 1. The presence of MC1Rd alleles in the East lava flow population is an indication of gene flow from mice populations living on light granite rocks. A shift to less polluting fuel in the twentieth led to cleaner air and a lightening of the moth's normal habitat. There are two species of elephant seals: northern elephant seals, Mirounga angustirostris, found off the western coast of North America from Baja California to the Gulf of Alaska, and southern elephant seals, M. leonina, found in the southern oceans. The heterotroph hypothesis of the origin of life states that basic organic building blocks formed from inorganic molecules under the primitive conditions present early in Earth's development. To prevent the loss of genes as chromosome ends wear down during DNA replication, the tips of eukaryotic chromosomes have specialized DNA "caps" called telomeres. These alleles code for glycoproteins that act as antigens on the red blood cells. D. During the last few decades, tall buildings have been built around the woodlot, and species 3, 4, and 5 are shadeintolerant plants. Which of the following best explains the impact of these new selective pressures on the organisms involved? Which of the following best describes what occurred during the periods indicated by the arrows? Which of the specimens indicated in the table is the oldest? The results of breeding programs can be seen in the change in winning times of the Kentucky Derby from 1880 to the present, as shown in Figure 1. Are the following statements true or false? C. Populations with little genetic diversity are less likely to contain individuals that can withstand different selective pressures. B. (Kentucky Derby). A. WebClick the card to flip . The mechanical properties and dimensions of the two bars are, E1=E2=200GPa,1=2=12106/CA1=25mm2,A2=50mm2,L1=3m,L2=5m,=1mm\begin{gathered} Which of the following best explains the relationship between coat color and predation rate in the rock pocket mouse population on the lava flow rocks with respect to the different coat color phenotypes? B. Both the larger population and the isolated population were maintained under identical conditions and allowed to mate randomly for another 20 generations. The island was surveyed again in 2015, and scientists determined that the giant kangaroo rats originally in population A are now to be considered as a new species. B. D. There is a progression of cellular organization in organisms found in Bacteria, Archaea, and Eukarya. Which of the following would be an appropriate alternative hypothesis? The frequency of the B allele will increase because light-colored individuals will be more visible to predators. D. In the presence of available energy and the absence of a significant quantity of atmospheric O2O2 simple proteins will form spontaneously from a mixture of amino acids. C. The frequency of the bb allele will increase because there will be more heterozygous individuals. In a certain small mammal, fur color is controlled by a pair of alleles, with B being dominant over b. A. Which of the following best explains the divergence in morphology in the birds? D. Cattle and sheep are separated by only one node, and they are separated from the other organisms by more than one node. Which of the following student claims is best supported by the data provided? A scientist believes that the first organic molecules may have come to Earth on meteorites 3.6 billion years ago. There is no difference in iridium levels in sediments that were deposited on Earth 3.6 billion years old, compared to recent sediments. A mixture of ribonucleotides such as adenine and uracil will spontaneously form single-stranded chains of RNA . These building blocks combined to form polymers, such as crude proteins. The same species will be found in both static periods, but the species in the second static period will have smaller shells due to the stress of undergoing rapid change. A. Most of the species found in the first static period will be absent in the second static period. The MC1RD allele is not responsible for dark coat color in the Carrizozo population, so the dark coat color is likely a result of convergent evolution. Which of the following best predicts the effect of the enclosure on the O'Neill population? A. B. Which of the following represents an alternate hypothesis tested by this experiment with regard to the population sizes of Henslow's sparrows? Which of the following best explains the mechanism that caused this speciation event in the giant kangaroo rats of population A? B. B. Bacterial ribosomes cannot recognize eukaryotic mRNA and will not translate the codon sequence. A group of researchers claim that chance events play an important role in the evolution of populations. An experiment is designed to help prevent the further decline and extinction of the Henslow's sparrow in which controlled burns will be set in the each of the ten Midwest counties in order to prevent the regrowth of the forest. If sediment layers that are 3.6 billion years old are tested, they will contain relatively high iridium levels, because that is when many meteorites crashed into the Earth. A. A recent survey of ten Midwest counties are shown in Figure 1. The MC1RD allele is not responsible for dark coat color in the Carrizozo population, so the dark coat color is likely a result of convergent evolution. Does this exceed the (24-hr) air quality standard of 0.14 ppm? The second group is fed the same food without the mutagen. Implement function distribution() that takes as input the name of a file (as a string). Which of the following best explains the mechanism that caused this speciation event in the giant kangaroo rats of population A? Mushrooms and potatoes are most closely related, since the node they share gave rise to all of the other organisms. Based on the phylogenetic relationships shown in Figure 1, which of the following best explains the similarities exhibited by whales, bony fishes, and cartilaginous fishes? At that time, the moths, normally white with black speckles, known as the peppered variety, became less common than the solid black variety. Owls (primary predators of rock pocket mice) are nocturnal visual predators that are able to distinguish effectively between dark and light colors in low-light conditions. C. Random mating within each population Based on the data in Table 1, which of the following best describes the relationship between the MC1R gene and coat color in the Carrizozo, New Mexico, rock pocket mouse population? The SinoHimalayan fern, Lepisorus clathratus is D. The two populations will not show any differences because they originated from the same gene pool. After rearing five additional generations of the mice on this new food, the two groups are assessed for how efficiently this new food is digested. Increasing the number of trials and the number of mice in each treatment group. Some lizards will migrate to new habitats in the mountains and become isolated, leading to allopatric speciation. D. Controlled fires in counties 4 and 5 will lead to an increase in the sparrow population. Because the mice are highly inbred, they are essentially identical to one another. Which of these would be an appropriate null hypothesis to test related to whether meteorites hit the Earth 3.6 billion years ago? Which of the following principles best justifies a claim that cheetahs, compared to other large cats, have a relatively low resilience to environmental perturbations? A. Which of the following best explains the phenotypic pattern in the moths over time? The M4M4 and M5M5 populations have the lowest genetic diversity of all populations. D. If recently fallen meteorites and meteoroids collected in space are tested, they will not contain organic molecules. The model is shown in Figure 1. Even though the population has rebounded following restrictions on seal hunting, genetic variation is greatly reduced in the northern species compared to that in the southern species. Convergent evolution, because these organisms do not share a recent common ancestor.
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