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This kettle lake formed 14,000 years ago when a glacier that covered the surrounding area melted. Initially devoid of animal life, over time the lake was colonized by invertebrates and other animals. Hypothesize how mutation, natural selection, genetic drift, and gene flow may have affected populations that colonized the lake.
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Campbell Biology in Focus, Books a la Carte Edition; Modified Mastering Biology with Pearson eText - ValuePack Access Card - for Campbell Biology in Focus (2nd Edition)
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- Which of the following is likely a reason why evolutionary radiation would occur on islands? A) there are many more species on islands B) islands tend to have more favourable habitats than continents because they are moderated by the ocean C) islands may have fewer animal and plant groups and thus provide more ecological opportunities D) organisms can disperse easily across oceans E) islands often have more diverse habitats than continentsarrow_forwardConsider figure 22.4. The following statements are true. Choose all applicable options. a) According to Lamarck, some fish species had to develop legs so that they could walk on land. This feature was passed on to the next generation. b) According to Darwin and Wallace’s model, the fish species improved by acquiring legs that permit walking on land. c) According to Lamarck, all the shown species were created independently and do not change over time. d) Darwin and Wallace proposed that some individual fish changed overtime to achieve higher fitness. Such improved features were passed on to the next generation.arrow_forwardTheory of Evolution PART 1 Answer the following with one sentence each question. 1. What do you know about the history of your selected area within the last 25-50 years (e.g. urbanization, geological changes, structures built or destroyed, etc)? 2. Based on this history, what hypothesis can you make about its effect on the area's nature/environment/wildlife? 3. what evolutionary changes/events do you expect to find? 4. Why do you expect to see these changes/events? 5. How will you determine these evolutionary changes/events? (your answers should within your study's limits)arrow_forward
- Is the following statement consistent with the provided data? Answer TRUE if the statement is consistent with the data.Answer FALSE if the statement is not consistent with the data. 1. The evolution of freeze tolerance involves some factors that were not shaped directly by natural selection. 2. Because of their freeze tolerance, wood frogs may colonise more of the remainder of the island of Newfoundland than the leopard frog. 3. The distribution of the wood frog and leopard frog supports character displacement as a plausible hypothesis for why they overlap.arrow_forwardAccording to " Denisovans: Decoding the Secrets of Our Mysterious Ancient Cousins”, what is the most likely reason that the Denisovans became extinct? A.Woolly mammoths expanded into the territories that Denisovans lived, and used up the food and land resources in that area. B.Homo sapiens expanded into the territories that Denisovans lived, and used up the food and land resources in that area. C.Homo sapiens expanded into the territories that Denisovans lived, and killed off the Denisovans. D.Predators expanded into the territories that Denisovans lived, and they killed off the Denisovans.arrow_forwardHow does finding the same fossils of a land animal on two different continents support the hypothesis of continental drift? A) The land animal fossil is now found in colder parts of the world which means the continents had drifted since the fossils were made. B) The land animal fossil could only have ended up fossilized on both continents if they were once together C) The land animal fossil was unable to swim across oceans so the fact that its fossils were found on distant continents suggested those continents had once been fused together as later moved apart. D) The land animal fossil wasnt found in Asia which wegner thought was only stable continent that hadn’t moved.arrow_forward
- You are discussing the choice of the “oil-eating” bacteria that you will use to clean the affected area from the oil spill and your team wants to know whether the Kalba sea constitutes a natural habitat for these bacteria. Formulate a hypothesis stating why or why not the Kalba sea area can be considered a natural habitat for such bacteria. Support your answer by discussing the role of evolution in contributing to the survival and thriving of “oil-eating” bacteria. Explain how and why these bacteria acquired these characteristicsarrow_forwardApplying your knowledge of genetics, natural selection and evolution, how is the positive response to global climate change possible? Is your answer supported by the information from the article “Can Evolution outrace Climate Change”? According to the authors of this article, what are the conditions necessary for an organism to evolve to accommodate climate change?arrow_forwardExplain how the stickleback fish in this Alaskan Lake illustrated the process of natural selection. (in short form)arrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
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