When the Galapagos Islands were surveyed by Darwin, he noted 13 species of finches. Later he published the proposal that: too many species of finches overcrowded the islands finches probably evolved from one ancestral South American species the 13 finch species were identical to those he observed in northwestern South America 600 miles to the east finches evolved wings adapted for flying between specific islands all finches adapted to the same food sources

When the Galapagos Islands were surveyed by Darwin, he noted 13 species of finches. Later he published the proposal that: too many species of finches overcrowded the islands finches probably evolved from one ancestral South American species the 13 finch species were identical to those he observed in northwestern South America 600 miles to the east finches evolved wings adapted for flying between specific islands all finches adapted to the same food sources

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...

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Darwin hypothesized that new species could appear gradually through small changes in an ancestral species. What experiment did he conduct to test this hypothesis? the breeding of finches O the breeding of pigeons the observation of humans the observation of dog breeds
How did Darwin explain the data about the finches on the various Galapagos Islands? Group of answer choices 1: they must have all evolved on one island and then spread to others 2: they were not always finches, but evolved from some other birds 3: a bird with a long narrow beak probably ate seeds, which were hard to crack 4: they had evolved different beaks because of the different food sources on the islands
Darwin's studies of Galapagos finches are well known in the study of evolution. These studies have been instrumental in helping us understand how new species evolved from pre-existing species. Which statement is true about the speciation of the Galapagos finches? Responses A The finches had different traits that influenced the environment in which they chose to live. The finches had different traits that influenced the environment in which they chose to live. - no response given B The finches evolved traits to help them survive in different environments. The finches evolved traits to help them survive in different environments. - no response given C Members of the original population evolved in such a way that it became impossible for individuals from the two new populations to interbreed. Members of the original population evolved in such a way that it became impossible for individuals from the two new populations to interbreed. - no response given D Genetic…
Briefly describe how observing beak sizes in finches before and after a drought in the Galapagos provides evidence for evolution. Meant to be a short answer like 4 sentences or so is great
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Why was Lyell's concept of uniformitarianism, which proposed that the Earth had been going through gradual geological changes over a much longer period of time than previously believed, important for the development of Darwin's ideas about natural selection? Geological catastrophes can reform the landscape and open new niches into which species can adapt and thrive It provided another argument against the Church's explanation for the creation of Earth It explained how vast mountain ranges could form to separate populations It explained the presence of fossils for species that no longer existed An old Earth provides enough time for the gradual process of evolution to take place
What makes the ecosystem of the Galapagos Island different than those found on large continentals? Upon what did Charles Darwin's original research on finches of the Galapagos Island focus? Describe the research Peter and Rosemary Grant conducted on the finches in the 1970's. Discuss the relationship between the finches' beak depth size and survival in terms of natural selection and fitness and the environmental causes that shaped the finch population of the islands.
tes es When Charles Darwin visited the Galapagos Islands, he observed the marine iguana. He later decided that the marine iguana evolved from the terrestrial iguana found on the mainland of South America. The marine iguana differs from the terrestrial iguana in several ways. The marine iguana has a flat tail, long claws and sharp teeth while the terrestrial iguana has a round tail, short claws and flat teeth. When looking at the differences between the terrestrial and the marine iguana, which of the following is not evidence that evolution has occurred? ers ences nline riods 1 and 2 Homologous structures shared between both iguanas P1, Highschool wol MP3, The biogeography of the iguanas 4 Comparative embryology of the iguanas The state of Hardy-Weinberg equilibrium present in both iguanas hu Fri The medium ground finch is one of Darwin's finches that inhabits an island in the Galapagos. It has a small beak that it uses to eat smallI, soft seeds. Irn 1977, a drought eliminated all but…
The image shows the beak shapes of four different finches observed by Charles Darwin on the Galapagos Islands. Darwin observed that broad-beaked finches prefer to eat large, hard seeds, while finches with narrow beaks eat small, soft seeds. What did Charles Darwin infer from this study that led to the development of the Theory of Evolution? O Finches with broad beaks have higher survival rates than finches with narrow beaks. O Finches with narrow beaks gradually evolve broader beaks to feed on all types of seeds. O The finches evolved from different ancestors with different shapes of beaks. O The finches evolved from a common ancestor and developed different beak shapes to adapt to the food available. •O 12:07 hp 女 -> Ce esc & % #3 8 6 7 4. 2 r t y e
Imagine that you are an evolutionary biologist currenyly studying a particular species of snake on an island off the coast of Durban, South Africa and that you have information indicating that1000 years ago, the same species of snakes in that island was observed to exist in a variety of colours (Red blue,yellow green) and that most of the snakes were blue. This same species of snakes and the same mixof colours were also found on the mainland (i.e Kwazulu Natal) Assuming that all the snakes are descended from an ancestral blue snake, explain this change in colour frequency (evolution) as though it were based solely on each of the following processes. a. Natural selection b. Bottleneck effect c. Founder effect
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What did Darwin observe regarding finches on different islands in the Galapagos? Different beak sizes led to birds singing different songs, which he found led to assortative mating. Different beak sizes and shapes were adapted to fit well with the available food. O Darwin observed that offspring of finches had similar sized beaks as their parents. O Finches could easily hop over to different islands and would quickly find new niches. 20 988 114 4 Indoor Playground with Wheels