Which of the following best describes the expected distribution of proboscis size of the moths at the end of the fiveyear study? Continue treating the three insect populations with the same insecticides and determine whether their efficiencies decline significantly after several generations. Which of the following best describes the processes occurring between the mouse populations and their environments? C. Cells with ribosomes were better able to produce proteins needed for a variety of metabolic functions. 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. 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. 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. Scientists want to determine the age of | Course Hero. Over time, populations A and B developed into two distinct species. Which of the following predicts the expected outcome of the experiment? Cells with mitochondria were able to utilize metabolic energy more efficiently. 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. 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. Double strands of DNA placed in a harsh environment will unwind and form RNA molecules for long term information storage. A scientist maintains a large population of the fruit fly Drosophila affinis in the laboratory. Future generations will eventually completely lose the a allele from the gene pool. The frequencies of the different phenotypes in the moth population changed randomly due to genetic drift. The model is shown in Figure 1. A. By the end of the twentieth century, the peppered version of the moth was again more common than the black version. 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? WebAP Biology Unit 7 Progress Check Which of the following best describes the processes occurring between the mouse populations and their environments? B. Given aerobic conditions and large amounts of lightning, amino acids will spontaneously form crude proteins. After the 20 generations, DNA sequencing was used to determine the genetic composition of each population. A. A. AP Biology Practice Test: Unit 7 Natural Selection A. B. 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. Hunting in the nineteenth century has been blamed for a drastic reduction in the northern elephant seal population. Unit 4 Chapters 7 & 8 Attitude and Attitude C, John David Jackson, Patricia Meglich, Robert Mathis, Sean Valentine, David N. Shier, Jackie L. Butler, Ricki Lewis. In a particular region, a species of lizard lives in the lowlands. 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. C. Controlled fires in counties 6 and 8 will have no effect on the sparrow populations. AP Biology Scoring Guide Unit 7 Progress Check: MCQ Part A 14. The original habitat had many available unoccupied ecological niches that were colonized by populations of the original species. The animals in population A were reproductively isolated from those in populations B, C, and D. Mollusk fossils were excavated and collected from a coastal cliff. C. A pool of amino acids can spontaneously form into singlestranded RNA, which would then code for proteins. 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. The degree of relatedness is inversely proportional to genetic diversity; that is, populations with a high degree of relatedness have less genetic diversity. Which of the following best explains the phenotypic pattern in the moths over time? (a)(a)(a) What is the angular momentum of a 2.8kg2.8 \mathrm{~kg}2.8kg uniform cylindrical grinding wheel of radius 28cm28 \mathrm{~cm}28cm when rotating at 1300rpm1300 \mathrm{rpm}1300rpm ? Convergent evolution, because these organisms do not share a recent common ancestor. Which of the specimens indicated in the table is the oldest? 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. C. The woodlot is shaded, with little direct sunlight, and species 3, 4, and 5 are shade-intolerant canopy trees. There is a progression of pathways in organisms found in Bacteria, Archaea, and Eukarya. Which of the following principles best justifies a claim that cheetahs, compared to other large cats, have a relatively low resilience to environmental perturbations? 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. 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. 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. 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. The allele for the peppered trait, being recessive, decreased in frequency. A. B. Bacterial ribosomes cannot recognize eukaryotic mRNA and will not translate the codon sequence. 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. All of the selective breeding programs ended in 1940. A population of the species has the following allele frequencies: B=0.85 and b=0.15. A group of birds is found in an island chain that have all descended from a single ancestral species. The SinoHimalayan fern, Lepisorus clathratus is widely distributed on the QinghaiTibetan plateau. 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. Iridium is an element that is rare on Earth but commonly found in meteorites. Both the larger population and the isolated population were maintained under identical conditions and allowed to mate randomly for another 20 generations. 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. A. Migration of individuals between the Isabela and Butuan populations There will not be any new individuals with the aa genotype. Start each population with a different species of bacteria to determine whether the same environment has an effect on genetic differentiation. 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. These alleles code for glycoproteins that act as antigens on the red blood cells. B. Scientists determined the frequencies of the M and N alleles in five localized and stable human populations in the Philippines (Figure 1). Relationships of selected organisms based on catalase structure. 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. B. 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. WebProgress checks help you gauge student knowledge and skills for each unit through: multiple-choice questions with rationales explaining correct and incorrect answers, and; Which of the following best describes what occurred during the periods indicated by the arrows? Humans and mice have the same number of chromosomes. Figure 1 shows the phylogeny of the birds. 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. 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. A researcher uses the protocol shown in Figure 1 to isolate a eukaryotic gene for the purpose of genetically engineering bacteria to synthesize the corresponding protein. A. Dark color is selected for in mice from the West, Mid, and East populations. White circle, grey circle and black circle. Some lizards will migrate to new habitats in the mountains and become isolated, leading to allopatric speciation. Some lizards will migrate to new habitats in the mountains and become isolated, leading to allopatric speciation. At that time, the moths, normally white with black speckles, known as the peppered variety, became less common than the solid black variety. Which of the following best explains the phenotypic pattern in the moths over time? Which of the following statements includes a reasonable refinement that researchers could use in repeating the experiment? In a certain small mammal, fur color is controlled by a pair of alleles, with B being dominant over b. 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 is an alternative hypothesis that can be tested to support the RNA World Hypothesis? The increased air pollution of the nineteenth century due to the use of coal led to a darkening of surfaces from soot. Suppose that a 15m/s15-\mathrm{m} / \mathrm{s}15m/s wind is blowing across the roof of your house. 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? A. A. 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. A. Specimen 1 Which of the following sets of data provides evidence that best supports common ancestry for organisms in all three domains? 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. B. 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? AP Biology Unit 7 Evolution MCQ Questions 8.pdf - AP This preview shows page 1 out of 1 page. AP Biology Scoring Guide Unit 7 Progress Check: MCQ Part A Copyright 2017. The College Board. These materials are part of a College Board program. Use or distribution of these materials online or in print beyond your schools participation in the program is prohibited. Human activities can drive changes in ecosystems that affect the risk of extinction. \end{gathered} After the 20 generations, DNA sequencing was used to determine the genetic composition of each population. Some lizards will migrate to new habitats in the mountains and become isolated, leading to allopatric speciation. One group is given food with an added substance that is known to be a mutagen. E_1=E_2=200 \mathrm{GPa}, \quad \alpha_1=\alpha_2=12 \times 10^{-6} /{ }^{\circ} \mathrm{C} \\ C. Humans and mice share a recent common ancestor that had the 5-TTAGGG-35-TTAGGG-3 repeat sequence in its telomeres. c) storing bile that is released into the bloodstream. Facts about the test: The AP Biology exam has 60 multiple choice questions and you will be given 1 hour Cattle and sheep are separated by only one node, and they are separated from the other organisms by more than one node. If you are giving the alternate exam for late testing, say: It is Friday afternoon, May 24, and you will be 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? B. C. If a sediment layer that is 3.6 billion years old is tested, it will contain organic material. 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 John David Jackson, Patricia Meglich, Robert Mathis, Sean Valentine, PL-600: Microsoft Power Platform Solution Arc. (c) silicon Take a look at the Intro to Unit 5 . In an experiment, the scientist creates two groups of twenty highly inbred mice. 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. B. B. 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. 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. AP Biology AP Classroom Unit 7 FRQ Flashcards | Quizlet D. Cattle and sheep are separated by only one node, and they are separated from the other organisms by more than one node. Continue treating the three insect populations with the same insecticides and determine whether their efficiencies decline significantly after several generations. Select the best alternate hypothesis to support this claim. A mixture of ribonucleotides such as adenine and uracil will spontaneously form single-stranded chains of RNA . Geologic events such as mountain building can directly affect biodiversity. Many of these species rely on pollinators that migrate based on changes in day length and the position of the Sun. C. The number of species present on Earth will equal the number of species on Earth before the last extinction. 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 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? 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. Based on the data in Figure 1, which of the following would most affect the allelic frequencies of the populations on Isabela and Butuan?
Hidden Gem Restaurants Queens,
Import Excel To Zebra Designer,
Articles U