the modifications found in succeeding generations of 13 finches as the birds adapted to dramatic changes in the environment (DeLeon et al.‚ 2011). This research lasted more than 30 years. Through their research‚ they realized that evolution was occurring faster than Darwin had expected. In relation to the survival of the fittest‚ during severe drought conditions‚ the birds’ food supply was reduced to tough spikey seeds‚ and only the finches with the thickest beaks survived because they were able
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2. Besides the finches‚ what two things did Darwin study while on the Galapagos Islands? He studied mockingbirds and giant tortoises 3. What year did Darwin return to England and who did he enlist to help him figure out the situation with the finches’ beaks? (Name the man and his occupation) Describe the man’s reaction and what he said about Darwin’s information he came back to England in 1836 and the man’s name was John Ghould 4. Relate why the finches had different beaks
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The Galapagos finches are a perfect example of this. The many different (14) species of finches on the Galapagos Islands all evolved from one common ancestor. Once the population of finch got to a point where food was scarce and competition was causing many finches to die off‚ the need to evolve presented itself and one group of finches developed a broader beak for cracking seeds‚ and the niche of that particular finch changed from eating insects to eating seeds‚ so it allowed the two finches to coexist
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age to understand more about the reasons of variations of creatures in Earth. However‚ there were some crucial points that Darwin never knew because of the limit of science in the age‚ that he lived in. Darwin never knew the two types of genes‚ how finches’ beaks were different‚ and what the Hox genes are. First‚ Darwin did not understand the two different types of genes—genes that code for proteins and genes that act as switches. To start with‚ genes that code for proteins are the genes that make
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Charles Darwin after studying the beaks‚ concluded that each shape seemed to serve a purpose suited to the particular island (Lee 15). He concluded that finches who had short‚ fat beaks mostly ate nuts and on islands where the main food source is insects the finches had long‚ skinny beaks (Lee 15). Based on this evidence Darwin developed a theory that at some point in the past‚ one type of finch arrived at the islands and then evolved differently on each island
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throughout the Galapagos Islands the main point to be taken away is his observations of the finches. Although there was a previous existence of this species on the South American mainland‚ they have ventured out into many different species among the Galapagos Islands. Although there are a few variants of the finch that are not fit to cross the terrain‚ those who do‚ find themselves crossed between survival and competition. Between the two islands there are different food sources. The finches adapted to
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Herbert Spencer 2 Abstract Herbert Spencer is a well known philosopher‚ biologist‚ sociologist‚ and political theorist. He is recognized for his part in structural functionalism and his first principles‚ just to name a few. He thought society was an organism much like the human body and should be studied as a whole (Ferris and Stein‚ 2010‚ p.
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Darwin spent five years exploring the world. Darwin traveled to many places mainly in the Southern Hemisphere. As he traveled from place to place‚ Darwin was surprised‚ by the similarities between the species. He wrote in his journal of the Galapagos Islands‚ "...there is even a difference between the inhabitants of the different islands; yet all show a marked relationship with those of America‚ though separated from that continent by an open space of ocean‚ between 500 and 600 miles in width." At
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BIOL 1001 Midterm I W2013 vA W2013 SC/BIOL 1001 3.0 Midterm I – February 6‚ 2013 Section P – Version A This test consists of 32 multiple choice items (including section and version indicators – these do not count in the score but must be completed) and 2 short
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of species” in 1859‚ in which he described his theory of evolution through natural selection. Darwin studied and observed a variation of plants‚ fossils and animals on the Galapagos islands and found they resembled modern species‚ and that most the animals and plants had distinct differences. He noted several species of finches that varied‚ and that they had important differences to each other. The size and shapes of their bill structure was a significant difference. He noted that these adaptations
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