Statistics and Probability questions and answers; College Board AP Classroom Unit 7 AP Biology Past Exam Questions AP Central | College Both the larger population and the isolated population were maintained under identical conditions and allowed to mate randomly for another 20 generations. The darker backgrounds conferred a selective advantage to the black variety, as described by natural selection. 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. Which of the following best explains the mechanism that caused this speciation event in the giant kangaroo rats of population A? The allele for the peppered trait, being recessive, decreased in frequency. Which of the following represents an alternate hypothesis tested by this experiment with regard to the population sizes of Henslow's sparrows? A. The animals in population A were reproductively isolated from those in populations B, C, and D. Convergent evolution, because these organisms do not share a recent common ancestor. Cells with nuclear membranes were better able to protect their genetic material against damage. 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. Based on the data in Figure 1, which of the following would most affect the allelic frequencies of the populations on Isabela and Butuan? Bacteria and eukaryotes use different mRNA codons for the same amino acids during translation. The density of air is I.29kg/m3\mathrm{I} .29 \mathrm{~kg} / \mathrm{m}^3I.29kg/m3. D. The original habitat was tropical, which increased the rate of mutation and led to rapid diversification. College Board AP Classroom Unit 7 Progress Check: MCQ Part C Qichen (1 of 18 ) Question 1 Two community service C. Restriction enzymes in the cytoplasm of the bacteria degrade linear DNA. Relationships of selected organisms based on catalase structure. C. The two populations will not show any differences because they were reared under identical conditions. D. The frequency of both alleles will increase because the population will enter a period of rapid growth. These alleles code for glycoproteins that act as antigens on the red blood cells. z=ycos(xy),(2,2,2)z=y \cos (x-y), \quad(2,2,2)z=ycos(xy),(2,2,2), Write the electron configuration of the ion. Which of the following is an alternative hypothesis that can be tested to support the RNA World Hypothesis? A. Introns must be removed from eukaryotic DNA before the gene is inserted into the plasmid. 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. Which of the following represents an alternate hypothesis tested by this experiment with regard to the population sizes of Henslow's sparrows? The genotypes BB and Bb result in dark-colored fur, the genotype bb results in light-colored fur. The switch to increased transport by planes during the twentieth century reduced this gene flow. Over time, populations A and B developed into two distinct species. The model is shown in Figure 1. 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. 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 Which of the following best describes the expected distribution of proboscis size of the moths at the end of the fiveyear study? 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. 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. Which of the following best predicts why humans and mice have identical telomeric repeat sequences? C. Start each population with bacterial cells that have different genotypes to make sure there is enough genetic variation for selection to occur. 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} Figure 1 shows the phylogeny of the birds. A. 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. C. After 1940, natural selection prevented any additional speed increases. The telomeric repeat sequences for selected organisms are given in Table 1. Based on the data in table 1, which of the following best provides evidence to support this claim? Cattle and sheep are separated by only one node, and they are separated from the other organisms by more than one node. True 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). Neither group of mice will show any change in the ability to digest the food because thousands of years are required to develop such a change. D. The animals in population A mate at different times of year, causing their gametes to be incompatible with those from animals in populations B, C, and D. B. 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. In an exercise to understand how genetically controlled physical traits could affect speciation, a theoretical population was imagined that contained organisms with three shapes and three levels of pigmentation, as illustrated in Figure 1. Populations with little genetic diversity are less likely to contain individuals that can withstand different selective pressures. By 1940, most genetic variation for speed had been lost from the gene pool. B. A. A scientist believes that the first organic molecules may have come to Earth on meteorites 3.6 billion years ago. A. Specimen 1 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. Assuming the thermometer to be a first-order system, find the time constant. 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 ? Continue treating the three insect populations with the same insecticides and determine whether their efficiencies decline significantly after several generations. Which of the following predicts the expected outcome of the experiment? Which of the following best explains the mechanism that caused this speciation event in the giant kangaroo rats of population A? D. During the last few decades, tall buildings have been built around the woodlot, and species 3, 4, and 5 are shadeintolerant plants. C. The original habitat contained many predators, and the species diversified in order to avoid extinction. A population geneticist is conducting an investigation on a population of mice. Suppose that a 15m/s15-\mathrm{m} / \mathrm{s}15m/s wind is blowing across the roof of your house. A. Take a look at the Intro to Unit 5 . A. (b)(b)(b) How much torque is required to stop it in 6.0s?6.0 \mathrm{~s} ?6.0s? White circle, grey circle and black circle. 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. The frequency of homozygous recessive individuals will increase because light-colored fur absorbs less heat. No new mutations 3.6-9b) results. Which of the following would be an appropriate alternative hypothesis? The frequency of the BB allele will increase because light-colored individuals will be more visible to predators. 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? Which of the following best explains why the population is not in Hardy-Weinberg equilibrium? The darker backgrounds conferred a selective advantage to the black variety, as described by natural selection. Which of the following is closest to the frequency of the MC1RD allele in the Tule Mountain population. Determine the velocity and acceleration of point PPP on the disk at this instant. The frequency of the BB allele will increase because light-colored individuals will be more visible to predators. The frequency of the B allele will increase because light-colored individuals will be more visible to predators. A. Table 1 shows the collected data. Dark coat color provides camouflage to mice on the flow; therefore, mice with dark coats predation rate in that habitat. A. One group is given food with an added substance that is known to be a mutagen. To test their claim, they monitored 12 populations of E. coli for 10,000 generations under the same environmental conditions. Continue treating the three insect populations with the same insecticides and determine whether their efficiencies decline significantly after several generations. ayo **** that girl who gave me the wrong answers. B. Bacterial ribosomes cannot recognize eukaryotic mRNA and will not translate the codon sequence. The genotypes BB and Bb result in dark-colored fur, the genotype bb results in light-colored fur. 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. Biology Practice Exam - College Board 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? D. Start each population with bacteria that differ from one another by a single mutation to ensure that the initial genetic variation in all populations is known. 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. Start each population with a different species of bacteria to determine whether the same environment has an effect on genetic differentiation. AP Biology Scoring Guide Unit 7 Progress Check: MCQ Part A 1. E1=E2=200GPa,1=2=12106/CA1=25mm2,A2=50mm2,L1=3m,L2=5m,=1mm. relationship between the MC1R gene and coat color in the Carrizozo, New Mexico, rock pocket mouse population? C. Set up a new experiment in which these insects are sprayed with two different insecticides to see if they are more effective than Insecticides #1 and #2. A group of researchers claim that chance events play an important role in the evolution of populations. When a population is reduced, new niches become available in the environment, which can trigger adaptive radiation. Graph that starts at 5.0 cm and ends at 9.0 cm. D. The number of species present on Earth will equal the number of species on Earth after the last extinction. Ap Classroom Unit 7 Progress Check Mcq Answers Ap Bio A group of researchers claim that chance events play an important role in the evolution of populations. However, an additional mutation in the black allele changed it from a dominant to a recessive allele at the turn of the twentieth century, leading to a return to the dominance of the original peppered variety. B. WebAP Biology Unit 7 Progress Check Which of the following best describes the processes occurring between the mouse populations and their environments? c) storing bile that is released into the bloodstream. Controlled fires in counties 4 and 5 will lead to an increase in the sparrow population. There will be no difference in the populations observed in the controlled fire sites and the rest of counties 5 and 6. This molecule cannot exist. 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? D. The two populations will not show any differences because they originated from the same gene pool. The degrees of relatedness in several native populations of prairie chickens in Marion and Jasper Counties in Illinois were determined. The population was predominantly black throughout the nineteenth century. similarities exhibited by whales, bony fishes, and cartilaginous fishes? Human activities can drive changes in ecosystems that affect the risk of extinction. 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. There is no difference in iridium levels in sediments that were deposited on Earth 3.6 billion years old, compared to recent sediments. E_1=E_2=200 \mathrm{GPa}, \quad \alpha_1=\alpha_2=12 \times 10^{-6} /{ }^{\circ} \mathrm{C} \\ 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. Which of these would be an appropriate null hypothesis to test related to whether meteorites hit the Earth 3.6 billion years ago? The liver helps the circulatory system by _________. Over time, populations A and B developed into two distinct species. 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? C. Humans and mice share a recent common ancestor that had the 5-TTAGGG-35-TTAGGG-3 repeat sequence in its telomeres. Start each population with genetically identical bacterial cells from a single culture to make sure that the initial genetic variation in all of the populations was exactly the same. B. If the environment for the plant species becomes too warm, the pollinators will no longer migrate to that area in the spring, continuing on to a more northern environment instead. Explain. D. The presence of MC1RdMC1Rd alleles in the East lava flow population is an indication of gene flow from mice populations living on light granite rocks. Which statement below best states an alternative hypothesis Fox could have used to frame his research? 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. The SinoHimalayan fern, Lepisorus clathratus is There is no difference in iridium levels in sediments that were deposited on Earth 3.6 billion years old, compared to recent sediments. D. Cells with mitochondria were able to utilize metabolic energy more efficiently. D. By 1940, most genetic variation for speed had been lost from the gene pool. The original habitat had many available unoccupied ecological niches that were colonized by populations of the original species. 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. Are the following statements true or false? Which of the following student claims is best supported by the data provided? Which of the following principles best justifies a claim that cheetahs, compared to other large cats, have a relatively low resilience to environmental perturbations? Cells with mitochondria were able to utilize metabolic energy more efficiently. The two populations will show significant genetic differences because the founder effect will result in significant losses in diversity in the smaller population. The frequency of the MC1RDMC1RD allele will decline due to natural selection. HardyWeinberg equilibrium, which of the following is the expected frequency of individuals with the genotype MN? After several generations, both groups of mice are given a new type of food that is harder to digest than the previous food. D. During the last few decades, tall buildings have been built around the woodlot, and species 3, 4, and 5 are shadeintolerant plants. Humans and mice have the same number of genes. Populations with little genetic diversity are less likely to contain individuals that can withstand different selective pressures. A scientist believes that the first organic molecules may have come to Earth on meteorites 3.6 billion years ago. 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. B. 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. B. These alleles code for glycoproteins that act as antigens on the red blood cells. 19 Attempt 2: Communities & Ecosys, Teaching and Learning Across the Lifepsan. Scientists determined the frequencies of the M and N alleles in five localized and stable human populations in the Philippines, Immigration of individuals from Metro Manila into the two populations.
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