Scientists studying kingfisher birds in the South Pacific discovered that there are three subspecies that live on the mainland of Papua New Guinea. These three subspecies can interbreed and are nearly indistinguishable from one another. The kingfishers are found in a variety of environments on the mainland, including rain forest and forests that have extended dry seasons. However, on smaller islands not far from the mainland, many more species of kingfishers exist, and each species is considerably different from one another. The environment on these smaller islands is very similar to that on the mainland. Which model is an accurate representation of the evolution of kingfishers in the South Pacific, and which piece of evidence best supports this model? Use the drop-down menus to complete your answer. Model A Model B Common Ancestor Ancestor Ancestor 2 The evolution of kingfishers is best represented by and this is supported by Time Time

Scientists studying kingfisher birds in the South Pacific discovered that there are three subspecies that live on the mainland of Papua New Guinea. These three subspecies can interbreed and are nearly indistinguishable from one another. The kingfishers are found in a variety of environments on the mainland, including rain forest and forests that have extended dry seasons. However, on smaller islands not far from the mainland, many more species of kingfishers exist, and each species is considerably different from one another. The environment on these smaller islands is very similar to that on the mainland. Which model is an accurate representation of the evolution of kingfishers in the South Pacific, and which piece of evidence best supports this model? Use the drop-down menus to complete your answer. Model A Model B Common Ancestor Ancestor Ancestor 2 The evolution of kingfishers is best represented by and this is supported by Time Time

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter21: Microevolution: Genetic Changes Within Populations

Section: Chapter Questions

Problem 1ITD: Peter and Rosemary Grant of Princeton University have studied the ecology and evolution of finches...

See similar textbooks

Similar questions

Consider the following scenario. A large population of lizards occupies an extensive range that is relatively uniform ecologically (i.e., in terms of climate and co-occurring species). At a certain point in time, the ancestral population becomes divided down the middle into two similar-sized portions by a barrier that completely prevents the movement of lizards between the descendant populations. Around the same time, a major flood occurs, and a small number of individuals are swept away from the mainland on floating debris and arrive alive on a small offshore island that has no lizards of this species. The habitat on the island is similar to their homeland, but not identical (the climate is slightly different, many mainland species of plants and animals are absent, and a few island species of plants and animals are different from any present on the mainland. Thus, there are now three separate populations. Compare and contrast the expected evolutionary consequences for these…
Consider the following scenario. A large population of lizards occupies an extensive range that is relatively uniform ecologically (i.e., in terms of climate and co-occurring species). At a certain point in time, the ancestral population becomes divided down the middle into two similar-sized portions by a barrier that completely prevents the movement of lizards between the descendant populations. Around the same time, a major flood occurs, and a small number of individuals have swept away from the mainland on floating debris and arrive alive on a small offshore island that has no lizards of this species. The habitat on the island is similar to their homeland, but not identical (the climate is slightly different, many mainland species of plants and animals are absent, and a few island species of plants and animals are different from any present on the mainland. Thus, there are now three separate populations. Compare and contrast the expected evolutionary consequences for these…
Which of the following is NOT true for the speciation of finches in the Galapagos islands? A. Natural selection acted on beak shape, and resulted in different beak morphologies for different food sources. B. Assortative mating reinforced existing divergence between birds. C. Speciation of finches started by birds starting to specialize on different food sources. D. Speciation of finches on the same island is due to allopatric speciation.
Species A experiences a mutation that produces a favorable allele to avoid predation by species B. In turn, species B experiences a mutation that helps it to counter the 'predator avoidance' allele that appeared in species A. What term best describes this situation?
What is the relationship between changes in gene frequencies and adaptations? The change in genes results in adaptations, which in turn, lead to the individual's ability to survive in its environment. The change in genes reduces adaptations, limiting the individual's ability to adapt for survival. The change in genes speeds up the process of adaptations, and the result is adaptations within any species will occur within a year. The change in genes results in adaptations in the individual, but these adaptations cannot be passed on to future generations.
How were researchers able to determine that Soapberry bug mouthparts had evolved to be shorter in some populations? By growing a population in a laboratory and forcing them to eat smaller walled fruits for several generations By analyzing the gene variants for mouth parts in different populations By experimentally introducing new fruits into the the ecosystems that the populations they suspected were evolving live in By comparing the mouthparts of modern populations to museum specimens collected in the past
When the isthmus of Panama (land bridge that connects north and south America) arose about 3 million years ago, it caused species of fish to diverge into sister species located in either the caribean or pacific ocean. Why did they form separate species? A) Because this is an example of sympatric speciation B) Because the tides are different on each side of the land bridge C) Because different predators in each ocean caused the populations to diverge D) Because the populations were reproductively isolated
What type of geographic barriers could have led to the speciation of finch in the Galápagos Islands?
Compare the roles of reproduction isolation, geographic isolation, and competition in the speciation of Darwin's finches on the Galapagos Islands
David Hills of Baylor University noted that three closely related species of leopard frog (genus Rana) exhibit substantialbut not completepostzygotic reproductive isolation when crossed in the laboratory. Field surveys of numerous populations in Texas and surrounding states revealed that populations of the three species breed at various times during the year. Data on the breeding schedule of both allopatric and sympatric populations of these species are presented in the Figure below. Interpret the data in the figure and explain how they may demonstrate that these frogs experience prezygotic reproductive isolation in nature. What type of prezygotic reproductive isolation do the data suggest? Source: D.M. Hillis. 1981. Premating isolating mechanisms among three species of the Rana pipiens complex in Texas and southern Oklahoma. Copeia 1981:312-319.
Compare the roles of reproductive isolation, geographic isolation, and competition in the speciation of Darwin's finches on the Galapagos Islands.
How does an individual with a competitive advantage lead to the evolution of an entire species? Individuals that survive due to their competitive advantage are able to expand their range, similar to how the finches radiated out from one common ancestor on the mainland. Traits that are advantageous help certain individuals reproduce at higher rates, so those traits are more common within the population. Some individuals are better at competing for resources, and that allows them to survive droughts or other major ecological events, leading to the extinction of certain species and the survival of others. Those who have traits that help them survive are able to reproduce, and their offspring have those traits, leading to a change in the species over time.