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. The increased air pollution of the nineteenth century due to the use of coal led to a darkening of surfaces from soot. The second group is fed the same food without the mutagen. John David Jackson, Patricia Meglich, Robert Mathis, Sean Valentine, David N. Shier, Jackie L. Butler, Ricki Lewis. In an experiment, the scientist creates two groups of twenty highly inbred mice. The species will undergo artificial selection, as the genes will adapt to warmer temperatures. natural The scientists identified a period of stability or stasis, followed by rapid change, and then stasis again with regard to shell shape. A mixture of ribonucleotides such as adenine and uracil will spontaneously form single-stranded chains of RNA . WebLearn about unit 7 of AP Biology as we cover topics such as artificial selection, population genetics, hardy-weinberg equilibrium, evidence of evolution, common ancestry, continuing D. Cells with mitochondria were able to utilize metabolic energy more efficiently. C. If a sediment layer that is 3.6 billion years old is tested, it will contain organic material. The degree of relatedness is inversely proportional to genetic diversity; that is, populations with a high degree of relatedness have less genetic diversity. 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. Whales, bony fishes, and cartilaginous fishes all have similar adaptations that enable them to live in the ocean. Which of the following sets of data provides evidence that best supports common ancestry for organisms in all three domains? A. In a certain small mammal, fur color is controlled by a pair of alleles, with B being dominant over b. WebAP BIO COLLEGE BOARD UNIT 7 4.9 (42 reviews) Geologic events such as mountain building can directly affect biodiversity. c) storing bile that is released into the bloodstream. Based on the data in Table 1, which of the following best describes the relationship between the MC1RMC1R gene and coat color in the Carrizozo, New Mexico, rock pocket mouse population? The allele for the peppered trait, being recessive, decreased in frequency. In addition to the ABO blood groups, humans have an MN blood type system in which the M and N alleles are codominant to one another. Some plant species flower in response to increasing daily temperatures in the spring. C. Organisms in Bacteria, Archaea, and Eukarya each have adenine, thymine, guanine, and cytosine bases forming their DNA. There is no difference in iridium levels in sediments that were deposited on Earth 3.6 billion years old, compared to recent sediments. Webanswer choices. AP Biology AP Classroom Unit 7 FRQ Flashcards | Quizlet Which of the following best predicts the effect of the enclosure on the O'Neill population? Of the following, which is the best next step for the researchers to best determine the long-term effectiveness of these insecticides with regards to the development of resistance? AP Bio Unit 7 | Biology Quiz - Quizizz Which of the following would be an appropriate alternative hypothesis? AP Biology Unit 7 Evolution MCQ Questions 8.pdf - AP The frequency of the MC1RD allele will decline due to natural selection. B. The frequency of the BB allele will increase because light-colored individuals will be more visible to predators. Scientists are concerned that the lowlands will become much warmer by the end of the twenty-first century and will become unsuitable for this lowland lizard species. Dark color is selected for in mice from the West, Mid, and East populations. Ap biology unit 1 test answers - anfk. The researchers determined that the East lava flow population is not in Hardy-Weinberg equilibrium. Dark color is selected for in mice from the West, Mid, and East populations. relationship between the MC1R gene and coat color in the Carrizozo, New Mexico, rock pocket mouse population? Both groups of mice will show an increase in the ability to digest the new food, because they experienced the same selective pressures. B. After several generations, both groups of mice are given a new type of food that is harder to digest than the previous food. 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. Cells with mitochondria were able to utilize metabolic energy more efficiently. AP Biology Scoring Guide Unit 7 Progress Check: MCQ Part A 1. 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? A group of birds is found in an island chain that have all descended from a single ancestral species. C. Random mating within each population Which of the specimens indicated in the table is the oldest? General Instructions for your group. Make .sure .you .begin .the .exam .at .the .designated .time . . If you are giving the regularly scheduled exam, say: It is Monday morning, May 13, and you will be taking the AP Biology Exam. If you are giving the alternate exam for late testing, say: 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. A. Continue treating the three insect populations with the same insecticides and determine whether their efficiencies decline significantly after several generations. The M4 and M5 populations have the lowest genetic diversity of all populations. The genotypes BB and Bb result in dark-colored fur, the genotype bb results in light-colored fur. A population of the species has the following allele frequencies: B=0.85 and b=0.15. White circle, white box, and white triangle. A. The researchers determined that the East lava flow population is not in Hardy-Weinberg equilibrium. However, the distance between the rigid walls to which the two bars are attached was measured incorrectly, so that a misalignment of \bar{\delta} (exaggerated in Fig. Because cheetahs, Acinonyx jubatus, experienced a bottleneck event about ten thousand years ago, living cheetahs exhibit very little genetic variation compared to other living species of large cats. Which of the following best describes the processes occurring between the mouse populations and their environments? This molecule cannot exist. Add an additional treatment group to the experiment to measure the effectiveness of another insecticide (Insecticide #3) over several generations. Which of the following principles best justifies a claim that cheetahs, compared to other large cats, have a relatively low resilience to environmental perturbations? B. Which of the following best explains the mechanism that caused this speciation event in the giant kangaroo rats of population A? Which of the following conditions of Hardy-Weinberg equilibrium was most likely not met in the northern elephant seal population following overhunting? B. Figure 1. A. The switch to increased transport by planes during the twentieth century reduced this gene flow. During the last few decades, tall buildings have been built around the woodlot, and species 3, 4, and 5 are shadeintolerant plants. A. Which of the following best describes what occurred during the periods indicated by the arrows? B. (b) Explain why some roofs are "blown outward" during high winds. Increasing the number of trials and the number of mice in each treatment group. All of the selective breeding programs ended in 1940. D. The number of species present on Earth will equal the number of species on Earth after the last extinction. Some plant species flower in response to increasing daily temperatures in the spring. Click the card to 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. A scientist maintains a large population of the fruit fly Drosophila affinis in the laboratory. The darker backgrounds conferred a selective advantage to the black variety, as described by natural selection. Which of the following best predicts why the recombinant bacteria will fail to produce the eukaryotic protein? There is no difference in iridium levels in sediments that were deposited on Earth 3.6 billion years old, compared to recent sediments. Students used an online database, which used the structure of catalase from different species, to generate the phylogenetic tree shown in Figure 1. AP Bio 7.14 Multiple Choice Questions | Fiveable Which of the following best explains the impact of these new selective pressures on the organisms involved? Which of the following is an alternative hypothesis that can be tested to support the RNA World Hypothesis? 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. The SinoHimalayan fern, Lepisorus clathratus is widely distributed on the QinghaiTibetan plateau. Based on the data in table 1, which of the following best provides evidence to support this claim? Some lizards will migrate to new habitats in the mountains and become isolated, leading to allopatric speciation. C. 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. Both the larger population and the isolated population were maintained under identical conditions and allowed to mate randomly for another 20 generations. The genotypes BB and Bb result in dark-colored fur, the genotype bb results in light-colored fur. A shift to less polluting fuel in the twentieth led to cleaner air and a lightening of the moth's normal habitat. describes how the L. clathratus population would be affected? Which of the following would be an appropriate alternative hypothesis? A mixture of ribonucleotides such as adenine and uracil will spontaneously form single-stranded chains of RNARNA. Some lizards will migrate to new habitats in the mountains and become isolated, leading to allopatric speciation. When a population is reduced, new niches become available in the environment, which can trigger adaptive radiation. To test their claim, they monitored 12 populations of E. coli for 10,000 generations under the same environmental conditions. C. The number of species present on Earth will equal the number of species on Earth before the last extinction. At that time, the moths, normally white with black speckles, known as the peppered variety, became less common than the solid black variety. A . After several generations, both groups of mice are given a new type of food that is harder to digest than the previous food. AP Biology Classroom Resources AP Central | College Some researchers claim that the decrease in plant species richness of this woodlot is unrelated to human activities over the last forty years. B. Bacterial ribosomes cannot recognize eukaryotic mRNA and will not translate the codon sequence. The distance the horses ran became shorter between 1880 and 1940. The second group is fed the same food without the mutagen. C. The original habitat contained many predators, and the species diversified in order to avoid extinction. Consider the circuit in the given figure with resistors R1=2500,R2=4500R_1=2500 \Omega, R_2=4500 \OmegaR1=2500,R2=4500, and R3=1200R_3=1200 \OmegaR3=1200, and batteries with emfs E1=6.5V\mathcal{E}_1=6.5 \mathrm{~V}E1=6.5V and E2=1.3V\mathcal{E}_2=1.3 \mathrm{~V}E2=1.3V. What is the magnitude of the current in the circuit? The second group is fed the same food without the mutagen. Which of the following best predicts the effect of the enclosure on the O'Neill population? In a particular region, a species of lizard lives in the lowlands. (a) Determine the reduction in pressure (below atmospheric pressure of stationary air) that accompanies this wind. D. Most of the species found in the second static period will resemble each other more than the species found in the first static period. d) releasing chemicals that begin to break down food in the mouth. These alleles code for glycoproteins that act as antigens on the red blood cells. The original habitat had many available unoccupied ecological niches that were colonized by populations of the original species. Bacteria and eukaryotes use different mRNA codons for the same amino acids during translation. C. Formation of simple proteins on primitive Earth only occurs spontaneously if the required building blocks were transported to Earth by a celestial event or a meteorite. Because the mice are highly inbred, they are essentially identical to one another. The two populations will show significant genetic differences because the founder effect will result in significant losses in diversity in the smaller population. In a certain small mammal, fur color is controlled by a pair of alleles, with B being dominant over b. 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? 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). B. Based on the data in table 1, which of the following best provides evidence to support this claim? WebStatistics and Probability questions and answers. Some lizards will migrate to new habitats in the mountains and become isolated, leading to allopatric speciation. Some scientists propose that due to human activity and climate change, a sixth mass extinction has already begun. Does this exceed the (24-hr) air quality standard of 0.14 ppm? Which statement below best states an alternative hypothesis Fox could have used to frame his research? A. Introns must be removed from eukaryotic DNA before the gene is inserted into the plasmid. Solved College Board AP Classroom Unit 7 Progress - Chegg D. Bacteria and eukaryotes use different mRNA codons for the same amino acids during translation. In the preceding exercise, if the stick is moving in a direction along its length (like a properly thrown spear), how long will you measure its length to be? WebAP Biology Scoring Guide Unit 7 Progress Check: MCQ Part A 2. In the presence of available energy and the absence of a significant quantity of atmospheric O2 simple proteins will form spontaneously from a mixture of amino acids. 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? Which of the following is the most reasonable prediction about the results of the experiment? Geographic isolation will create separate gene pools, leading to speciation over time. Given aerobic conditions and large amounts of lightning, amino acids will spontaneously form crude proteins. Which of the following best predicts why the recombinant bacteria will fail to produce the eukaryotic protein? Are the following statements true or false? Even though there are numerous mountains in the region, the climate on the mountains is too cold for the lizards to survive. Which of the following best explains the trend shown in Figure 1? (b)(b)(b) How much torque is required to stop it in 6.0s?6.0 \mathrm{~s} ?6.0s? Hunting in the nineteenth century has been blamed for a drastic reduction in the northern elephant seal population. C. Humans and mice share a recent common ancestor that had the 5-TTAGGG-35-TTAGGG-3 repeat sequence in its telomeres. After several generations, both groups of mice are given a new type of food that is harder to digest than the previous food. Take a look at the Intro to Unit 5 . Some lizards will migrate to new habitats in the mountains and become isolated, leading to allopatric speciation. 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? 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. The SinoHimalayan fern, Lepisorus clathratus is Geographic isolation will create separate gene pools, leading to speciation over time. The telomeric repeat sequences for selected organisms are given in Table 1. D. Large population size. The darker backgrounds conferred a selective advantage to the black variety, as described by natural selection. D. By 1940, most genetic variation for speed had been lost from the gene pool. C. Humans and mice share a recent common ancestor that had the 5-TTAGGG-35-TTAGGG-3 repeat sequence in its telomeres. Which of the following best explains the impact of these new selective pressures on the organisms involved? E_1=E_2=200 \mathrm{GPa}, \quad \alpha_1=\alpha_2=12 \times 10^{-6} /{ }^{\circ} \mathrm{C} \\ 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. D. Populations with low genetic diversity are more likely to contain individuals that can withstand different selective pressures. After the 20 generations, DNA sequencing was used to determine the genetic composition of each population. 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. Which of the following is an alternative hypothesis that can be tested to support the RNA World Hypothesis? 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. Based on the information provided in the figure, which of the following best describes how membrane-bound organelles provided unique evolutionary advantages to the last eukaryotic common ancestor? C. The animals in population A accumulated fewer genetic mutations, adapting to their microclimate. 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. A_1=25 \mathrm{~mm}^2, \quad A_2=50 \mathrm{~mm}^2, \quad L_1=3 \mathrm{~m}, \\ Which of the following best explains the phenotypic pattern in the moths over time? A population of the species has the following allele frequencies: B=0.85 and b=0.15. A model of the investigation is shown in Figure 1. 3.6-9b) results. 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 scientist believes that the first organic molecules may have come to Earth on meteorites 3.6 billion years ago. Population B was separated for a longer time from the original population than population A was, and population B evolved into a more distinct new species than population A did. The frequency of homozygous recessive individuals will increase because light-colored fur absorbs less heat. A group of researchers claim that chance events play an important role in the evolution of populations. AP Biology Unit 7 Progress Check Flashcards | Quizlet Which of the following best describes the expected distribution of proboscis size of the moths at the end of the fiveyear study? At this same instant, the disk is spinning at a constant rate 2=4rad/s\omega_2=4 \mathrm{rad} / \mathrm{s}2=4rad/s, measured relative to the rod. A. Which of the following best predicts why humans and mice have identical telomeric repeat sequences? C. The group of mice fed the mutagen will show a greater ability to digest the food, because the higher genetic variation within the group makes it more likely that some individuals will have a combination of genes better adapted to the new food. Organisms in Bacteria, Archaea, and Eukarya each have adenine, thymine, guanine, and cytosine bases forming their DNA. Geologic events such as mountain building can directly affect biodiversity. White circle, grey circle and black circle. Henslow's sparrow populations came to a peak in the mid1900s. At the given instant, the rod is spinning about the zzz axis with an angular velocity 1=8rad/s\omega_1=8 \mathrm{rad} / \mathrm{s}1=8rad/s and angular acceleration 1=2rad/s2\dot{\omega}_1=2 \mathrm{rad} / \mathrm{s}^21=2rad/s2. Observed modern extinction rates will resemble the rates found early in previous extinctions. Over time, a new 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. 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 MC1RDMC1RD allele is not responsible for dark coat color in the Carrizozo population, so the dark coat color is likely a result of convergent evolution. B. Specimen 2 WebView AP Biology Unit 7 Evolution; MCQ Questions 1.pdf from BIOLOGY 101 at Oakland High School, Oakland. B. 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. Unit 7 MCQ Flashcards | Quizlet The original habitat contained mutagens, leading to the rise of new species as a result of accumulated mutations. Which of these would be an appropriate null hypothesis to test related to whether meteorites hit the Earth 3.6 billion years ago? During the last few decades, tall buildings have been built around the woodlot, and species 3, 4, and 5 are shadeintolerant plants.

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