A group of birds is found in an island chain that have all descended from a single ancestral species. WebProgress checks help you gauge student knowledge and skills for each unit through: multiple-choice questions with rationales explaining correct and incorrect answers, and; Over time, a new Which of the following student claims is best supported by the data provided? Populations with little genetic diversity are less likely to contain individuals that can withstand different selective pressures. The second group is fed the same food without the mutagen. Based on the data in Figure 1, which of the following would most affect the allelic frequencies of the populations on Isabela and Butuan? Continue treating the three insect populations with the same insecticides and determine whether their efficiencies decline significantly after several generations. Specimen 1 Specimen 2 Specimen 3 Specimen 4, . To test their claim, they monitored 12 populations of E. coli for 10,000 generations under the same environmental conditions. 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. Implement function distribution() that takes as input the name of a file (as a string). Which of the following student claims is best supported by the data provided? A group of researchers noticed that using a particular drug to treat cancer in mice would reduce the size of the tumor, but some of the tumor cells appeared to be resistant to the drug since some of these cells would increase in number over time. ayo **** that girl who gave me the wrong answers. Over time, populations A and B developed into two distinct species. Observed modern extinction rates will resemble the rates found early in previous extinctions. Scientists interested in the relationship among vision, foraging for food, and fitness studied three isolated populations of a small species of primate whose Many of these species rely on pollinators that migrate based on changes in day length and the position of the Sun. Which of the following best explains the mechanism that caused this speciation event in the giant kangaroo rats of population A? Each of the fifteen genotypes shown in generation 1 and generation 2 represents 100 mice. A. Convergent evolution, because these organisms do not share a recent common ancestor. B. A scientist is studying the impact of mutagens on genetic variation in mice. Which of the following best describes the processes occurring between the mouse populations and their environments? Cells with mitochondria were able to utilize metabolic energy more efficiently. WebAP Biology Unit 7 Evolution MCQ Questions 8.pdf - AP Biology Scoring Guide Unit 7 Progress Check: MCQ Part A 8. The genotypes BB and Bb result in dark-colored fur, the genotype bb results in light-colored fur. Which of the following statements includes a reasonable refinement that researchers could use in repeating the experiment? There is no difference in iridium levels in sediments that were deposited on Earth 3.6 billion years old, compared to recent sediments. A group of researchers claim that chance events play an important role in the evolution of populations. Which of the following would be an appropriate alternative hypothesis? 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. In a particular region, a species of lizard lives in the lowlands. Whales, bony fishes, and cartilaginous fishes all have similar adaptations that enable them to live in the ocean. 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. Which of the following student claims is best supported by the data provided? Catalase is a protein enzyme that catalyzes the breakdown of hydrogen peroxide (H2O2) into water and oxygen gas in the cells of many living organisms. Hunting in the nineteenth century has been blamed for a drastic reduction in the northern elephant seal population. Cells with mitochondria were able to utilize metabolic energy more efficiently. After several generations, both groups of mice are given a new type of food that is harder to digest than the previous food. Figure 1 shows the phylogeny of the birds. The frequency of the BB allele will increase because light-colored individuals will be more visible to predators. C. Random mating within each population The scientists identified a period of stability or stasis, followed by rapid change, and then stasis again with regard to shell shape. Organisms in Bacteria, Archaea, and Eukarya each have adenine, thymine, guanine, and cytosine bases forming their DNA. To test their claim, they monitored 12 populations of E. coli for 10,000 generations under the same environmental conditions. Populations J1 through J5 are located in Jasper County. 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. 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. D. During the last few decades, tall buildings have been built around the woodlot, and species 3, 4, and 5 are shadeintolerant plants. B. Immigration of individuals from Metro Manila into the two populations Cattle and sheep are separated by only one node, and they are separated from the other organisms by more than one node. The increased air pollution of the nineteenth century due to the use of coal led to a darkening of surfaces from soot. Even though there are numerous mountains in the region, the climate on the mountains is too cold for the lizards to survive. A scientist is studying the impact of mutagens on genetic variation in mice. The original habitat had many available unoccupied ecological niches that were colonized by populations of the original species. Which of the specimens indicated in the table is the oldest? WebA. Prepare flowcharting segments for each of the following operations: d. Using a terminal to enter paper-based source document data and send it to a remote location where a corporate computer updates the company database. Which of the following best predicts why the recombinant bacteria will fail to produce the eukaryotic protein? Which of the following best explains why the population is not in Hardy-Weinberg equilibrium? 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? 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. D. If recently fallen meteorites and meteoroids collected in space are tested, they will not contain organic molecules. 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. WebStatistics and Probability questions and answers. 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 principles best justifies a claim that cheetahs, compared to other large cats, have a relatively low resilience to environmental perturbations? Which of the following best explains the impact of these new selective pressures on the organisms involved? 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. 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. Students used an online database, which used the structure of catalase from different species, to generate the phylogenetic tree shown in Figure 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? natural WebAP Biology Unit 7 Progress Check Which of the following best describes the processes occurring between the mouse populations and their environments? The frequency of the BB allele will increase because light-colored individuals will be more visible to predators. These building blocks combined to form polymers, such as crude proteins. A. Continue treating the three insect populations with the same insecticides and determine whether their efficiencies decline significantly after several generations. B. A thermometer requires 1 min to indicate 98% of the response to a step input. 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. Hunting in the nineteenth century has been blamed for a drastic reduction in the northern elephant seal population. 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? L_2=5 \mathrm{~m}, \quad \bar{\delta}=1 \mathrm{~mm} 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. The two populations will show significant genetic differences because the founder effect will result in significant losses in diversity in the smaller population. D. During the last few decades, tall buildings have been built around the woodlot, and species 3, 4, and 5 are shadeintolerant plants. (a) Determine the reduction in pressure (below atmospheric pressure of stationary air) that accompanies this wind. Which of the following best explains the divergence in morphology in the birds? Geographic isolation will create separate gene pools, leading to speciation over time. 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. Some scientists propose that due to human activity and climate change, a sixth mass extinction has already begun. The population was predominantly black throughout the nineteenth century. B. A. Increasing the number of trials and the number of mice in each treatment group. A. Introns must be removed from eukaryotic DNA before the gene is inserted into the plasmid. Which of the following statements best predicts the result of a comparison between the fossils found before and after the period of rapid change? Biology Practice Exam - College Board 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} Populations with little genetic diversity are less likely to contain individuals that can withstand different selective pressures.