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The Biological Species Concept

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What is a species? Definition: a group of animals of plants that are similar and can produce young animals or plants: a group of related animals or plants that is smaller than genus (Merriam – Webster) There are thought to be approximately 1.5 million different types of species worldwide. However, there is currently no one central inventory to record species and no one method used for determining if two beings are from the same or different species. As a result this estimation of 1.5 million may be out by as little as 1 million or as much as 100 million. Therefore this value of 1.5 million is an estimate and may be out by as little as 1 million or as much as 100 million. One of the most predominantly used definitions of a species is the Biological …show more content…

If we go by the Biological Species Concept then we would assume that it does not as this concept relies solely on whether or not organisms can reproduce with each other. With regard to BSC, although appearance may assist in identifying a species it is not accurate to use it to define a species. While some creatures may look alike they may not be from the same species and others may appear to be completely different yet be of the same species. For example, the hydrangea can have blue flowers or pink flowers. Due to this difference in appearance one may assume that these plants are of different species. However, this in fact is not the case and the two different coloured hydrangeas can reproduce together. The colour difference can occur as a result of the pH of the soil and the amount of aluminium taken up by the plants. The Biological Species Concept is not the only concept used to classify species, there are many others and as no one method has been determined to be most accurate, it is largely left up to each taxonomists own judgement to decide which method they prefer. Some of these other concepts …show more content…

Using this concept requires extreme and sometimes trivial sub-divisions of organisms into separate species. An example of where this concept becomes tedious can be seen in the in the many subspecies of Ensatina salamander in California. These salamanders have many sub-species and neighbouring sub-species tend to mate with with each other to produce small genetic and phenotypic dissimilarities. Because each type of salamander was produced from two separate lineages they do not possess a common ancestor separate from other species and therefore they must be divided up into many

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Binomial nomenclature is a system in which every species has a two-part name. The system is based upon similarities that exist among common organisms so that the more closely related organisms share the first part of their name. 55. a) Which two of the following three species are more closely related: Entamoeba histolytica, Escherichia coli, Entamoeba coli? Explain.

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Intraspecific competition occurs when the organisms belong to the same species. Competition between different species is known as interspecific competition. An experiment was conducted on Fagus sylvatica L. to determine if competition was occurring in high or low density environments, the findings showed that interspecific and intraspecific competition were comparable (Knoke, et al, 2007) Brassica rapa is known as a significant model organism because it can reach adulthood in as little as six weeks. It is sometimes referred to as a “fast plant”. (Aspbury & Gabor, 2014).

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David Berkowitz also known as the Son of Same was a serial killer who terrorized New York City during the 1970s. When he was born in New York on June 1, 1953, he was known as Richard David Falco. His birth mother put him up for adoption when he was just a few days old. He was then adopted by Nathan and Pearl Berkowitz who named him David Berkowitz. As Berkowitz was growing up, he was a smart boy but also showed many problems.

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Kimberly Monroe SPCM 200 February 16 2015 Informative speech outline I. [Attention getter]: According to All World Primates, a database with the research from 300 scientists observations on primate behavior, there are about 612 species and subspecies in the world. 30% of these are endangered, including the Orangutans. II.

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When our species first came into existence, we began as a single, collective group of organisms, teamed up together with only one goal: to survive by finding food and water, and reproducing to facilitate our existence here on Earth. Though every organisms goal on this planet is to survive and reproduce, the means and skills they have of achieving these goals are different. Some may only be good at finding important items, thus making them gatherers. Others may only be good at fighting, thereby making them hunters, and then there are other organisms capable of both skills and roles. As a result, each organism groups into their respective roles, therefore creating a unity among the organisms with similar (if not identical) traits, while simultaneously

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Becoming a literary masterpiece is one_________. Sarah Winnemucca Hopkins auto biography, originally published in 1883, Life Among the Piutes, details her tribe’s tradition and history along with the tribe’s first encounter with white setters and how her tribe was systematically targeted and removed. Sarah Winnemucca Hopkins was a native princess who dedicated her life to improving the social condition of her people. H.J. Landry is a scholar and professor who has discussed the main criteria for a work to be considered a literary masterpiece. The criteria for a literary work to be considered a masterpiece is: it must educate the reader, alters the reader's perception, and changes society or its mindset in some way.

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Does Pluto have the characteristics needed to be considered a planet? Throughout this essay, I will explain how things should be classified when it comes to speaking in terms of the universe. Is there criticism that was merited against in such terms, models, or ideas, and does it support the method of us understanding the universe? This conversation is focusing on to what extent the class of the cosmology became successful.

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A very controversial topic of discussion today involves the difference between the biological and social view of race. The biological view sees a population according to traits that are passed down biologically, this is where the term “race” comes from. It would be somewhat accurate to say that people from different parts of the world have some differences biologically. The issue in this argument is found when people see that there may be some differences biologically but try to segregate them into fixed categories. What is found by this is that by assessing this biology and peoples' appearance, you can categorize them into a specific race.

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Thinking further and associated his observations with all these theories, which made more sense. Darwin observed that there were thirteen types of finches and the only differences between them were their beaks and that they each were suitable for the type of food they ate. Also observed, traits from parents can be passed to their offspring. The organisms had more offspring that their environment could “handle”. He noticed that resources were running out and that caused competition between groups.

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The relationship between species diversity and size of area. Research Task By Keaton Rea Grade 11   Table of contents Introduction and Hypothesis Review of literature Gathering of data Presentation of findings Discussion Conclusion Bibliography   Literature Review In 1921 Swedish scientist, Olaf Arrhenius proposed the Species Area Relationship (SAR).

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Whilst it is very successful at this, and is in most cases necessary to the plant, the very mechanism by which it reproduces (mitosis) does not result in much genetic variation. Should an environmental change come along for which the species is not adapted, it is likely that it will be wiped out entirely. This is because none of the individuals have developed any mutations or genetic adaptations that allow them to survive in that

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Introduction The theory of evolution has been discussed, evaluated, and researched many times since the theory was first brought to light. Darwin’s theory of evolution is said to be divided into two parts, common decent and natural selection (Bouzat, 2014). Many research papers agreeing with Darwin’s theory comment on the diversity of a species and how they have descended from one common ancestor. Natural selection is a process in which species that are better adapted to the environment tend to survive and reproduce (Dictonary.com).

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When a species dissolve, important components of our web of life dissolve as well, constantly in ways not well understood by everybody. “Scientists appraise that the mislaying of species

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DNA in Forensic Science DNA is the carrier of genetic information in humans and other living organisms. It has become a very useful tool in forensic science since it was discovered. In forensic science, DNA testing is used to compare the genetic structure of two individuals to establish whether there is a genetic relationship between them. One example of the use of DNA in forensic science that is important in biology today is comparing a suspect’s DNA profile to DNA that was discovered at a crime scene.

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If evolution was a true event that happened, there should be many transitional species today that scientists could study. Today scientists don’t have any live animals that are thought to be a transitional species that is going to evolve into something else. With similar species thought to come from a common ancestor, all traits of one of the species should be found in the other species in about the same area. There are many cases where two species have many things in common, but the two species also have some very distinct characteristics that are unbridgeable between the two. This means that there had to have been different ancestors that had things about them that kept them from having a common

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