Determining the affects of natural selection on gall fly (Eurosta) larvae from different predators Ariel O’Neil Biology 1020H Abstract This lab was done with the objective of determining if directional selection causes early larvae death in the gall fly. By first examining the parasitoid wasp and birds predatory actions we can hypothesize and predict the smaller galls will be most likely to survive directional selection.…
1a. Figure C 1b. The reason Figure C is the best histogram for birds that survived is because Bumpus had suggested that birds that were unusually large or small were unable to survive the winter due to a natural selection he called, stabilizing selection. According to Bumpus, stabilizing selection "winnows out of the extremes and favors those in the middle..", supporting that the there is a relationship between the size of the birds' traits and their survival. Figure C shows the best representation of the living sparrows because of the high frequency of the 'average' trait.…
Natural Selection and Darwin’s Finches State the four criteria needed for natural selection to occur and provide examples/evidence from the article. Competition between individuals in the article was the over population of the offspring’s of the finches. There were thirteen species of finches that live on the island of Galapagos. There was also variation in population for these finches, which is other natural selection of occurrences.…
After I read the article “Body Ritual among the Nacirema”, I find that Nacirema is a tribe of “magic-hidden people” (Miner 507). In the article, the author writes, “they are a North American group living in the territory between the Canadian Creel the Yaqui and Tarahumare of Mexico, and the Carib and Arawak of the Antilles. Little is known of their origin, although tradition states that they came from the east” (Miner 503). The author clearly states that the Nacirema live as a little-known North American group. They are really Americans, because I find that Nacirema spelled backwards is American.…
The beaks of this finch evolved to be able to eat harder, larger seeds rather than small soft ones. The population of medium ground finches is decreasing and experiencing inbreeding because of their small population numbers. Another type of…
Gould and Lewontin argue that the adaptationist programme is a narrow view of evolution and should be expanded to incorporate other explanations. They claim that one of the key adaptationist arguments is “if one adaptive program fails, try another” (Gould & Lewontin 586). In this way, evolutionary biology focuses exclusively on researching and publishing material on adaptation. They propose that scientists should instead explore other avenues of discovery that may lead to alternative explanations, explanations that they overlooked by narrowly focusing on adaptation. Adaptationists typically claim that a trait has evolved because it is fit to the environment, whereas Gould and Lewontin argue that perhaps these traits are simply byproducts similar…
In the early teachings of evolution, finches were not mentioned. The third chapter of the book goes in to more scientific detail about how the science of evolution works. There is a lot of talk about DNA and different biological terms that are specific to the biological or chemistry studies. Chapter four, five, and six are very similar in this regard as they go into more detail about the origins behind life and specifically human…
But they started to evolve so they blended and matched the background and it was more difficult for predators to find them. Better beak, Means better chance of survival The different types of Finches have different types of beaks cause they eat different types of seeds, A Finch that has trouble picking…
Evolution is a theory that every organism evolved from a lower life form. It is a belief first coined by Charles Darwin, an English biologist, naturalist, and geologist. Darwin also stated that instead of creatures being made for their environment, they progressed through a process called “natural selection”. Natural selection is the idea that organisms that are weaker either, adjust to their environment, or die off.…
The sea crew also tried to do the best job they could on recording the depths of the ocean, but as we know in that time that was not a very good job. Darwin saw the basic changes of finch as he went from island to island. The finch would either have longer beaks, different color, or varying sizes. These adaptations he noted from every island. To make sure when he came back home that the scientist would believe him he brought dead stuffed birds and a map of the Galapagos back.…
YR 10 Science Evolutionary Theory Alicia Horsfield Evolution can be defined as a gradual process in which a species changes into a different and more complex form. This happens over several generations. Evolution also proves that all species are related through genetic variation. (yourgenome.org, n.e). Charles Darwin (1809-1882) was an English Naturalist, famous for creating the theory of ‘evolution’.…
There is a huge controversy in the United States between whether teachers should educate students on Natural Selection. South Carolina passed a law to allow students to begin learning it this year, but their teachers cannot use the term ‘Natural Selection’ because it does not agree with their senators religion. Evolution has been an issue for many years and goes back to when Darwin created the theory in 1858. He informed the world of his findings after a long period spent observing the alterations in species. Afte…
It is also true that many of the living things on earth now were not all existing during the past with dinosaurs, such as, birds and mammals. Since, dinosaurs don’t exist in the present time and birds do, then it must be correct that all life on earth evolved from previous ancestors such as birds from dinosaurs and humans from apes. On that note, Gould’s argument on evidences from the fossil records suggests one of the most famous example of fossil transition called Archaeopteryx. It is a genus of early bird that has a combination of feathers and structures of a bird with features such as teeth, pony tail, and legs of a small coelurosaur dinosaur. Additionally his third argument outshines the beliefs of creationist over the evolutionist because it questions that if God created human species long time ago, then why God added more modern features in a chronological sequence such as reducing face, teeth, and etc. to humans.…
Charles Darwin created the theory of evolution, and through his books, made it public. While on his five year voyage, Charles visited the Galapagos Islands and noticed how each island seemed to have its own exclusive species of finch that were different from the ones on the mainland. Through this and other observations, Charles concluded that living things are always changing to adapt to their environment. After about 23 years after his voyage Charles published The Origin of Species. There was much controversy about it.…
Understanding how humans and other organisms have evolved is fascinating. Charles Darwin was the individual who developed the theory of natural selection. Natural selection is “the process by which species become better adapted to their local environments” (Witz BW 2004). Darwin arrived at this statement by observing the biological structures of organisms, formulating a hypothesis, testing his hypothesis and then using the evidence he discovered to support his…