Macbeth: Summary Essay -- essays research papers

Macbeth: Summary Macbeth and Banquo, Scottish generals, are returning after crushing a rebellion against Duncan ( King of Scotland ), when they are met by three witches. The witches prophesy that Macbeth will become thane of Cawdor , then later on he will become King. Banquo is told that he will never become King, but will be the father of Kings. Macbeth is horrified, for shortly afterwards a messenger arrives to tell him that Duncan has created him Thane of Cawdor as a reward for his services. Macbeth writes the news to his wife. Lady Macbeth reads the letter from Macbeth, telling her of the prophecies. With reading this she chooses to invite evil spirits into her to take away her womanhood, she wants to lose her tenderness that is normally associated with womanhood so that she can hel...

An Analysis of the Observed Heterozygosity of Lake Trout

An analysis of the observed heterozygosity of Lake Trout populations from three lakes: Devil, Eagle, and Loughborough, inferred from microsatellite genotypes. Abstract: This study was undertaken in order to compare the heterozygosity of three Lake Trout populations at various loci. Samples of twenty-five Lake Trout were collected from three lakes: Devil, Eagle and Loughborough, all three of which are situated north of Kingston, Ontario. An autoradiograph was used to analyze the genotypes of the individuals at six different loci of microsatellites, which are repeat sequences in the DNA that are neutral and do not code for proteins.This data was used to compare the genetic diversity of the three different trout populations. Numerical values for observed heterozygosity (Ho) were then generated using the data and the Doh heterozygosity calculator. The results have indicated that the mean heterozygosity in respect of Devil Lake trout was significantly greater than that of the trout in Eag le Lake (p=2. 89E-7) as well as that of Loughborough Lake (p=1. 44E-19). Furthermore, the mean heterozygosity for Eagle Lake trout was significantly greater than that of Loughborough Lake (p=2. 2E-6). This may be due to the fact that natural selection acts as a force to cause inbreeding to eliminate harmful genes causing low heterozygosity in a population. In addition, human and natural effects occurring in the lakes, for example, fishing and water temperature may cause differences in heterozygosity. Understanding and using these findings may help with sustaining fish populations. Introduction: Heterozygosity is the measure of the genetic variation in a population at a particular gene locus.Genetic variation within a population is important in maintaining or increasing the fitness of members in the population and ultimately the survival of the species. Fitness describes the capability of an individual species of a certain genotype to reproduce, and is usually equal to the proportion of the individual's genes in all the genes of the next generation. A positive correlation was found between the heterozygosity at the loci and the fitness (survival and maturation) of the fish, suggesting that heterozygosity is advantageous (Pujolar et al. 005). A heterozygote advantage describes the case in which the heterozygote genotype has a higher relative fitness than either the homozygote dominant or homozygote recessive genotype. An individual's fitness is manifested through its phenotype, and the phenotype may be affected by both genes and environmental characteristics. One such characteristic that was observed to possibly have an effect on levels of heterozygosity in a population was the area in which the population lives. In an experiment conducted by Rowe et al. 1999) the heterozygosity of various populations of Natterjack Toads (Bufo calamita) found in several areas were compared, ultimately discovering a lower heterozygosity in a population that is isolated from other s. Volckaert and Zouros (1989) conducted a study to measure genetic diversity levels in scallops (Placopecten magellanicus) and discovered levels of heterozygosity to be highest as age increased. Ferguson (1990) found similar information that affects diversity among rainbow trout (Oncorhynchus mykiss) and concluded that heterozygosity levels were proven to have a direct relationship between the sex, size and age of the fish.There are many factors that may affect the genetic diversity of a population. In particular, various events and environmental characteristics may affect the genetic diversity of Lake Trout. One factor may include fishing. This activity may cause the population of the fish to decrease at an unstable rate, thus this study will be undertaken to determine the many factors that may contribute influences to the genetic diversity of Lake Trout in three lakes: Devil, Eagle and Loughborough Lake.Using six microsatellite loci from 25 Lake Trout from all three lakes, observ ed heterozygosity values that act as an indicator for genetic diversity, will be obtained and analyzed. This data can be further used by analyzing and providing additional information about the influences of certain characteristics on population genetics. Results: Figure 1 illustrates that the lake with the greatest observed heterozygosity is Devil Lake. It was determined that the observed heterozygosity of Devil Lake is significantly greater than the observed heterozygosity of Loughborough Lake (p=1. 4E-19). The sample size for all 3 lakes was 25 Lake Trout. Figure 1. The graph illustrates the mean observed heterozygosity of the three lakes. The error bars represent standard deviation. Discussion: The conducted experiment involving heterozygosity of Lake Trout from Devil, Eagle and Loughborough Lake shows that there are significant differences between the three lakes. Devil Lake had the highest mean heterozygosity within its population, Eagle Lake heterozygosity was found to be in the middle and Loughborough Lake with the lowest.It was determined that the observed heterozygosity of Devil Lake was significantly greater than the observed heterozygosity of Loughborough Lake (p=1. 44E-19). The difference in the data set’s outcomes may be explained by a number of factors, such as natural selection, fishing and restocking the lake, and lake temperatures. All these factors may cause diversity in heterozygosity. The goal of an organism is to reproduce and pass their genes on to the next generation allowing the species to survive.The passing on of genetic material can be achieved through inbreeding or outbreeding. Inbreeding is the breeding amongst family or self; outbreeding is the breeding with members of the same species that are not closely related. It may be believed that inbreeding is not good for a population with such opinions being based on having seen the result of inbreeding in humans. Inbreeding as well as outbreeding, however, has both advantages a nd disadvantages. One advantage of inbreeding is its ability to depress the expression of recessive alleles (Ellstrand and Elam 1993).In a population with a damaging recessive allele, an individual may not seek to mate with anyone who potentially carries or expresses that allele. In this example the population might inbreed to decrease the heterozygosity in an attempt to remove the harmful gene. Mating within the family- when it is apparent that the family does not carry the detrimental allele, is more ideal in an evolutional prospective than putting the survival of that population at risk.In regards to Ellstrand and Elam’s study, this situation could occur in the Lake Trout from Loughborough causing the Lake Trout to have a lower mean heterozygosity. This Lake Trout population could be purging undesired alleles from its gene pool. One can conclude that not only does genetics have an effect on heterozygosity, but humans do as well. Another factor that may cause a loss of gene tic diversity is fishing pressures. Smith et al (1990) suggested that fishing activities which concentrate on spawning populations differentially remove the older and more heterozygous individuals from the virgin stock.Previously stated, levels of heterozygosity are higher as age increases (Volckaert and Zouros 1989). Due to fishing, the amount of Lake Trout may decrease and there would be less fish. To fix the amounts of fish in the lakes, humans restock the lakes with hatchery fish (fish that are grown by humans and released into the wild). Evans et al. (1991) found that the human harvested fish tend to have lower genetic variation and actually decrease the fitness and survival of the native species. Loughborough Lake has the biggest population but the lowest heterozygosity.Compared to Eagle Lake and Devil Lake, most people from the Loughborough Lake area receive their income from fishing (Ontario Ministry of Natural Resources 1970). Excessive fishing depletes the amount of fish a nd creates the perceived need to continually restock the lake with fish. The practice of restocking the lake with hatchery fish may result in the large population of Lake Trout which would in turn decrease the heterozygosity of Loughborough Lake. There are other factors that may contribute to increase levels of heterozygosity in fish.One such characteristic that may increase levels of heterozygosity in fish is fluctuations in water temperature. Zimmerman and Richmond (1981) found that highly variable thermal regions demand for greater fitness. The fittest of fish are more heterozygous because they are able to survive in different temperatures. In Zimmerman and Richmond’s experiment, the greatest temperature fluctuation was 7Â °C, with the highest heterozygosity level of 49%. This trend may prove that the greater the temperature fluctuation, the greater the heterozygosity of a population living within the waters.The temperature fluctuations of the three lakes are: Devil Lake at 31Â °F, Eagle Lake at 21Â °F, and Loughborough Lake at 7Â °F (Ontario Ministry of Natural Resources 1970). These numbers correlate with the data by showing that Devil Lake with the highest temperature fluctuation has the greatest heterozygosity, whereas Loughborough Lake with the lowest temperature fluctuation has the lowest heterozygosity. The mean heterozygosity of Lake Trout from Devil Lake was significantly greater than that of trout from Eagle Lake, which was greater than that of Loughborough Lake.Potential reasons for genetic diversity may be caused by natural selection acting as a force to cause inbreeding to eliminate harmful genes, fishing in the lakes which then require the lakes to be restocked with hatchery fish, and thermal fluctuations that cause differences in heterozygosity. Further research and experiments specifically looking in depth at effects that causes genetic diversity should provide greater insight into why the heterozygosity in populations varies. Lit erature Cited: Ellstrand N. , Elam R. 1993.Population genetic consequences of small population size: implications of plant conservation. Annual Review of Ecological Systems. 24: 217-242. Evans D. , Casselman J. , Wilcox C. 1991. Effects of Exploitation, Loss of Nursery Habitat, and Stocking on the Dynamics and Productivity of Lake Trout Populations in Ontario Lakes. Ontario Ministry of Natural Resources. 193: 1-3 Ferguson M. 1990. Enzyme Heterozygosity and growth in Rainbow Trout: Genetic and Physiological Explanations. The Genetical Society of Great Britain. 8: 115-122. Ontario Ministry of Natural Resources. 1970. Map of Eagle Lake. Map of Loughborough Lake. Map of Devil Lake. Queen’s University Map and Air Photo Library. 613. Pujolar J. , Maes G. , Vancoillie C. , Volckaert F. 2005. Growth Rate Correlates to Individual Heterozygosity in the European Eel, Anguilla Anguilla L. Evolution. 59: 189-199. Rowe G. , Beebee T. , Burke T. 1999. Microsatellite heterozygosity, fitness and demography in natterjack toads Bufo calamita. Animal Conservation. 2: 85-92. Smith P. Francis R. , McVeagh M. 1991. Loss of Genetic Diversity due to Fishing Pressure. Fisheries Research. 10: 309-316. Volckaert F. , Zouros E. 1989. Allozyme and physiological variation in the scallop Placopecten magellanicus and a general model for the effects of heterozygosity on fitness in marine molluscs. Marine Biology. 103: 51-61 Zimmerman G. , Richmond M. 1981. Increased Heterozygosity at the Mdh-B Locus in Fish Inhabiting a Rapidly Fluctuating Thermal Environment. American Fisheries Society. 110: 410-416

The Ethics Of Plagiarism As A Nurse Educator Essay

The Ethics of Plagiarism As a nurse educator, one of my students plagiarized a final paper. The purpose of this paper is to delineate the ethical principles involved in this situation, the ethical decision-making models that have been used in the past, the newer ethical model that I used, including the sources of information that I have considered, and the consequences for the student. Lastly, I will describe why I chose one path of action versus other paths. Ethical Principles Ethics is the division of philosophy that focuses on morality, which defines behavior as right and wrong. Ethical principles represent standard guidelines for behavior. Ethics aids a person in the justification of a course of action. Society defines what moral values and behaviors are held and legislated (DeNisco Barker, 2016). Ethical principles include the concepts of autonomy, freedom, beneficence, fidelity. Autonomy entails a person’s desire to direct themselves. Freedom is the person’s ri ght to do as they please. But this right is contingent on members of a society agreeing, whether explicitly or not, to abide by behaviors that do not deceive or force others, behaviors that lead to peaceful interpersonal relationships. Beneficence is the person’s motivation to do good. Fidelity is a person’s faithfulness to safeguarding his or her values (Husted Husted, 2015). Doornbos, Groenhout and Hotz (2005) describe three levels ofShow MoreRelatedThe Ethics Of Plagiarism As A Nurse Educator Essay2636 Words   |  11 Pages The Ethics of Plagiarism As a nurse educator, one of my students plagiarized a final paper. 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It emphasizes the necessityRead MoreKeeping The Students Rights And School Policies1806 Words   |  8 PagesStrategies and Options Keeping the students’ rights and school policies in mind, once the whistleblower reports the information, the educator should invite the accused student to a private location together with another impartial faculty member present to discuss the situation. The educator would then inform the student that he or she has been accused of using his or her cellphone during the examination that day and would remind the student of the academic and school policies which clearlyRead MoreApa Writing Style and Mechanics: a User’s Guide5510 Words   |  23 PagesrEsource page: Values and ethics are closely related but different (University of Phoenix, 2004). Appendix C has additional examples of in-text citations when paraphrasing. Plagiarism. Plagiarism constitutes a serious academic concern. According to Lawton, Cousineau, and Hillard (2001), â€Å"academic communities demand that writers credit others for their work and that the source of their material clearly be acknowledged† ( ¶ 6). Internet access has resulted in an increase in plagiarism. As noted by McCabeRead MoreStudy Guide Essay25129 Words   |  101 Pagesadministration have been involved in distance learning for over forty years and understand the characteristics common to successful students in this unique educational environment. This course was prepared by CCU faculty members who are not only outstanding educators but who have real world experience. They have prepared these guidelines to help you successfully complete your educational goals and to get the most from your distance learning experience. 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Read MoreFundamentals of Hrm263904 Words   |  1056 PagesPractices 6 Recruiting 7 Employee Selection 7 Training and Development 7 Ethics and Employee Rights 7 Motivating Knowledge Workers 7 Paying Employees Market Value 8 Communications 8 Decentralized Work Sites 8 Skill Levels 8 A Legal Concern 8 Employee Involvement 20 How Organizations Involve Employees 20 Employee Involvement Implications for HRM 20 Other HRM Challenges 21 Recession 21 Off Shoring 21 Mergers 22 A Look at Ethics 22 Summary 23 Demonstrating Comprehension: Questions for Review 24 KeyRead MoreCase Study148348 Words   |  594 Pagesor similar. Industry focus also reduces the risk of plagiarism. There are many student assignments of a similar nature available for a fee on the web, and it would definitely be wise to avoid allowing students to research the same industries in successive years. Requiring a specific focus on particular themes (e.g. internationalisation) or some less common concepts (e.g. the strategy canvas, cycles of competition etc.) can also reduce plagiarism. Insisting on precisely citing sources for key data The Ethics Of Plagiarism As A Nurse Educator Essay The Ethics of Plagiarism As a nurse educator, one of my students plagiarized a final paper. The purpose of this paper is to delineate the ethical principles involved in approaching this situation, the ethical decision-making models that have been used in the past, the newer ethical model that I used, including the sources of information that I have considered, and the consequences for the student. Lastly, I will describe why I chose one path of action over other paths. Ethical Principles Within philosophy, ethics is the division that focuses on morality, which defines behavior as right and wrong. Ethical principles represent standard guidelines for behavior, while also justifying a person’s given course of action. Society defines what moral values and behaviors are held and legislated (DeNisco Barker, 2016). Further, ethical principles include the concepts of autonomy, freedom, beneficence, fidelity. Autonomy entails a person’s desire to direct themselves, while freedom is the person’s right to do as they please. However, this right is contingent on members of a society agreeing, whether explicitly or not, to abide by behaviors that do not deceive or force others–behaviors that lead to peaceful interpersonal relationships. Beneficence is the person’s motivation to do good, and fidelity is the individual’sShow MoreRelatedThe Ethics Of Plagiarism As A Nurse Educator Essay2562 Words   |  11 Pages The Ethics of Plagiarism As a nurse educator, one of my students plagiarized a final paper. The purpose of this paper is to delineate the ethical principles involved in this situation, the ethical decision-making models that have been used in the past, the newer ethical model that I used, including the sources of information that I have considered, and the consequences for the student. Lastly, I will describe why I chose one path of action versus other paths. Read MorePlagiarism : School College Of Health Science840 Words   |  4 PagesRunning head: PLAGIARISM 1 PLAGIARISM 2 Plagiarism Robert Blakley Baptist College of Health Science Abstract The paper analyzes the existing ethical academic dilemma of applying plagiarism within diverse academic works by students in general and nursing students in particular. It presents particular examples of well-known plagiarism cases and allows properly evaluating the reasons and ways of avoiding any acts of intentional and unintentional plagiarism. It emphasizes the necessityRead MoreKeeping The Students Rights And School Policies1806 Words   |  8 PagesStrategies and Options Keeping the students’ rights and school policies in mind, once the whistleblower reports the information, the educator should invite the accused student to a private location together with another impartial faculty member present to discuss the situation. The educator would then inform the student that he or she has been accused of using his or her cellphone during the examination that day and would remind the student of the academic and school policies which clearlyRead MoreApa Writing Style and Mechanics: a User’s Guide5510 Words   |  23 PagesrEsource page: Values and ethics are closely related but different (University of Phoenix, 2004). Appendix C has additional examples of in-text citations when paraphrasing. Plagiarism. Plagiarism constitutes a serious academic concern. According to Lawton, Cousineau, and Hillard (2001), â€Å"academic communities demand that writers credit others for their work and that the source of their material clearly be acknowledged† ( ¶ 6). Internet access has resulted in an increase in plagiarism. As noted by McCabeRead MoreStudy Guide Essay25129 Words   |  101 Pagesadministration have been involved in distance learning for over forty years and understand the characteristics common to successful students in this unique educational environment. This course was prepared by CCU faculty members who are not only outstanding educators but who have real world experience. They have prepared these guidelines to help you successfully complete your educational goals and to get the most from your distance learning experience. Again, we hope that you will find this course both helpfulRead MoreApa Writing Style and Mechanics7913 Words   |  32 Pagesmaterials page: Values and ethics are related closely but different (University of Phoenix, 2004). Appendix C has additional examples of citations in text when paraphrasing. Plagiarism. Plagiarism constitutes a serious academic concern. According to Lawton, Cousineau, and Hillard (2001), â€Å"Academic communities demand that writers credit others for their work and that the source of their material clearly be acknowledged† ( ¶ 6). Internet access has resulted in an increase in plagiarism. As noted by McCabeRead MoreLibrary Management204752 Words   |  820 Pages . . . . . . . . . . . . . . 338 Developing Leadership. . . . . . . . . . . . . . . . . . . . . . . . . 340 15—Ethics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346 Ethics in Modern Organizations . . . . . . . . . . . . . . . . . 347 Ethics—A Definition . . . . . . . . . . . . . . . . . . . . . . . . . . 347 Contents xiii The Importance of Ethics. . . . . . . . . . . . . . . . . . . . . . . 349 The Ethical Information Professional . . . . . . . . . . . . Read MoreFundamentals of Hrm263904 Words   |  1056 PagesPractices 6 Recruiting 7 Employee Selection 7 Training and Development 7 Ethics and Employee Rights 7 Motivating Knowledge Workers 7 Paying Employees Market Value 8 Communications 8 Decentralized Work Sites 8 Skill Levels 8 A Legal Concern 8 Employee Involvement 20 How Organizations Involve Employees 20 Employee Involvement Implications for HRM 20 Other HRM Challenges 21 Recession 21 Off Shoring 21 Mergers 22 A Look at Ethics 22 Summary 23 Demonstrating Comprehension: Questions for Review 24 KeyRead MoreCase Study148348 Words   |  594 Pagesor similar. Industry focus also reduces the risk of plagiarism. There are many student assignments of a similar nature available for a fee on the web, and it would definitely be wise to avoid allowing students to research the same industries in successive years. Requiring a specific focus on particular themes (e.g. internationalisation) or some less common concepts (e.g. the strategy canvas, cycles of competition etc.) can also reduce plagiarism. Insisting on precisely citing sources for key data