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Select two other human characteristics and explain how they may have resulted from later adaptation to a grasslandhabitat.
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- Use the image below to answer questions 2-3. As part of his series of experiments, Connell removed one species of barnacle from around the other species and examined how well the intact barnacle species survived in different locations along the intertidal zone. The following diagram shows the results of this study. Yes 14444 Does the removal of Balanus affect the distribution of Chthamalus? O No Balanus-removal Sites 10000 t Chthamalus-removal SitesUse the image below to answer questions 2-3. As part of his series of experiments, Connell removed one species of barnacle from around the other species and examined how well the intact barnacle species survived in different locations along the intertidal zone. The following diagram shows the results of this study. Yes ** сестралния Does the removal of Balanus affect the distribution of Chthamalus? No Balanus-removal Sites 000000 1 Chthamalus-removal Sites kWhat is required for sympatric speciation to occur? A. Continuous gene flow between different populations B. Geographic separation of populations C. Two populations that are different begin to reproduce and create hybrids D. Emergence of a reproductive barrier
- Give typing answer with explanation and conclusion A conservationist wants to enhance survival of individual Daphnia populations in the metapopulation along the Scandinavian coast. To be successful, which action would this conservationist most likely carry out in these freshwater rock pools? a. Connecting vulnerable pools by making dispersal corridors to the ocean b.Separating the smallest pools from the largest to prevent immigration c.Removing the shortest-lived Daphnia species from all pools d.Separating pools so the Daphnia cannot mix with one another e.Connecting vulnerable pools by making dispersal corridors between themWhich process in a hybrid zone increases the likelihood of speciation? A. stability – when a hybrid zone remains the same B. reinforcement – when a hybrid zone widens and fewer hybrids are formed C. convergence – when a hybrid zone narrows and more hybrids are formed D. fusion – when a hybrid zone disappears and separate species fuse into oneWhich condition is the basis for a species to be reproductively isolated from other members? a. It does not share its habitat with related species. b. It does not exist out of a single habitat. c. It does not exchange genetic information with other species. d. It does not undergo evolutionary changes for a significant period of time.
- Which derived characteristic would MOST likely explain the results from the genome analysis? A. appearance of vascular tissue B. appearance of pollen C. appearance of monocots and dicots D. appearance of flowers Comparison of Lignin-Associated Genes Across Photosynthetic Organisms In a study comparing the genomes of photosynthetic organisms, scientists identified genes specific to the synthesis of lignin. The resulting data are presented in the table. Organism Group Approximate number of genes associated with an enzyme unique to lignin biosynthesis Phaeodactylum Diatoms 0 Volvox Green algae 0 A moss Bryophytes 12 Spike moss Lycophytes 38 Rice Monocots 55 Poplar tree Dicots 53Does this figure illustrate a strength or a drawback of using morphological traits to establish species?The data presented in Part D shows the results of artificial selection for hairy Wisconsin Fast Plants. Identify the null hypothesis for this investigation? A. If the mean number of trichomes is greater in the second generation than in the parent population, then selection has occurred. B. There will be no difference between the mean number of trichomes in the second generation compared to the parent population. C. As a result of selection, the mean number of trichomes will be greater in the second generation. D. If plants with the most trichomes in the first generation are selected as parents, then the second generation will have more trichomes.
- Explain how tolerance limits to environmental factors determine distribution of a highly specialized species such as the saguaro cactus.Why are species that live at the tops of mountains at increased risk of extinction due to climate change? a. The colder temperatures at the tops of mountains gradually increase, and the species at the tops of the mountains are displaced by species at lower elevations moving up. b. The species at the tops of the mountains are adapted to moving up and down the mountains and species at lower elevations are displacing them as they move down the mountains. c. The species at the tops of the mountains are adapted to lower oxygen and climate change increases oxygen content in the air. d. Species at the tops of mountains do not have the genetic diversity for adaptation that lower-elevational species do. Therefore species at the tops of the mountains are more likely to go extinct.Draw a food web for Wytham Woods using the information on feeding relationships in Table 3.3.