Evolution Lab Essay Example for Free

Evolution Lab Essay The finches on Darwin and Wallace Islands feed on seeds produced by plants growing on these islands. There are three categories of seeds: soft seeds, produced by plants that do well under wet conditions; seeds that are intermediate in hardness, produced by plants that do best under moderate precipitation; and hard seeds, produced by plants that dominate in drought conditions. The lab is based on a model for the evolution of quantitative traits-characteristics of an individual that are controlled by large numbers of genes. These traits are studied by looking at the statistical distribution of the trait in populations and investigating how the distribution changes from one generation to the next. For the finches in Evolution Lab, the depth of the beak is the quantitative trait. I investigated how this trait changes under different biological and environmental conditions. I manipulated various biological parameters (initial mean beak size, heritability of beak size, variation in beak size, fitness, and clutch size) and one environmental parameter (precipitation) of the system, and observed changes in the distributions of beak size and population numbers over time. Assignment 2: The Influence of Precipitation on Beak Size and Population Number The first experiment is designed to study the influence of beak size on finch population numbers. For finches, deep beaks are strong beaks, ideally suited for cracking hard seeds, and shallow beaks are better suited for cracking soft seeds. I experimented first with the finches’ adaptation and evolution of their population over 300 years, and changed the Wallace birds beak size to 28mm, and Darwin’s birds stayed at the default of 12mm. I hypothesize a since there are more hard seeds (64%) on the islands than soft seeds (4%). The birds with the smaller beak (Darwin) will not be able to get enough food which may cause some of the birds to die, resulting in a decrease in the smaller beak bird’s population and an increase in the larger beak (Wallace) birds population because of the larger beak size better able to eat hard seeds. Darwin: Red Wallace: Blue I observed that the Darwin birds (smaller beak) actually grew up to about 25mm, as well as the Darwin bird’s population grew over time. The Wallace bird’s beak stayed the same as well as the population stayed steady but grew. The data actually refutes my hypothesis because I didn’t expect the smaller beak sized birds to grow to adapt to the seeds, I expected them to die off. This next experiment is designed to explore the effect of precipitation on finch beak size and population numbers. The experiment was to see how a decrease in precipitation on Darwin Island might affect beak size and how a decrease in precipitation might influence population numbers for these finches over time. I hypothesize a decrease in rain will produce more hard seeds because the hard seeds favor drought conditions, while the other seeds will not increase. And the decrease in rain may only slightly cause the finch population to decrease at first, but then will increase and stay steady as the birds have time to adapt to the drought conditions and their beaks will evolve. I observed that the beak sized for Darwin’s birds supported my hypothesis in that the birds beak sized increased with time. And the population did what I thought too, in that it decreased at first and then increased steadily. I then ran another experiment for 200 and 300 years separately. I observed that the 200 years population and beaks did about the same as the 100 year experiment. Which still confirm my hypothesis. But the 300 years, the bird’s populations and beaks sizes on both islands increased, but that the Darwin birds eventually passed Wallace’s birds in population and beak sized. I then performed the same experiment for both Wallace Island and Darwin Island simultaneously. I noticed that the 100 and 200 years beak size and population both increased and, but Darwin’s birds were still behind Wallace island birds. But then at the 300 year both beaks and populations were almost the same increase. My hypothesis on how an increase in precipitation on Darwin will influence beak size is that the beak sizes should become smaller and more shallow because the increase in rain will make softer seeds and smaller, shallow beaks are better for soft seeds. And the bird’s population will increase.. I observed just what I hypothesized – the beaks grew smaller and their populations grew huge. When I reran the experiment I observed that Wallace island birds also followed the similar growth for beaks and population as the Darwin birds. When I ran the experiment by increasing precipitation on Wallace Island to 50 cm/year and increasing beak size to 28 mm, for 300 years, I observed the beak sized actually decreased slightly and the population stayed steady and in line with the Darwin birds. Next experiment I decreased beak size on both of the islands to an intermediate value. I decreased rainfall on one island to a value close to zero. On the other island, I increase rainfall close to the maximum value and ran the experiment for 300 years. I observed different effects on each island. On the Darwin island with a medium beak size and almost no rain had increase in beak size and population. The Wallace birds with a medium beak size and lots of rain had a decrease in beak size and a steady increase in population. Assignment 4: Effect of Island Size My hypothesis for what effect an increase in island size will have on beak size and finch populations is that the beak size will have an increase and population will increase. I began my experiment by leaving all other parameters at their default values. Then changed the island size of Darwin to the highest it could go to 1km. The beak sized increased as predicted and so did the population increased. When I decreased island size, the beak size grew and the population dropped off first in the beginning but then increased with time. Based on previous experiments if I decrease the clutch size the birds populations will decrease a great deal. Also if I decrease the heritability parameter, and decrease clutch size the populations decrease – which looked like to the point of extinction.

Coca-Cola entering a new market :: essays research papers

Introduction To give a short introduction to the circumstances affecting this case of Pepsi & Coca Cola it has to be said that in general it is not just simple for MNEs to invest and enter foreign markets as regulations and restrictions differ from coutry to country and hence ifluence international business negotiations to a great extend. Therefore MNEs investigating in foreign markets have to either adopt to those condition given by the host country government, which of course to a certain extend has to be negotiated as no one of those parties want to loose their maximum independence- or the MNE decides not to take further steps towards the foreign operation and leaves the feeld by assumingly – in turn – missing out a great opportunity, but this again depends on a complexity of economic and cultural reasons influencing international trade, which I will develop critically in the further case study of Pepsi & Coke in accordance to the following questions. 1.)  Ã‚  Ã‚  Ã‚  Ã‚  Did PepsiCo make too many concessions in order to enter the Indian market? Could the company have negotiated better? In this case study PepsiCo – for the second time – intends to enter the Indian market, though already having experienced major problems which consequently led to their first departure (for non profitability). As well Coca Cola departured India after harsh disagreements with the government. Why after all did Pepsi enter again, facing a country with such strongly adverse feelings towards foreign companies – which is rooted in Indians history of colonialistic times when the British, French and Portuguese were extracting the country‘s recources ‚‘its wealth‘ without returning noticeable benefits to its economy. Moreover they feared that national companies would not be able to compete with foreign investors and as a result of this high artificially prices and profit margins reduced incentives for national companies to enter. This almost irrepairable bad approach towards foreigner went even that far that journalist widely reported that PepsiCo had a CIA connection aimed at undermining India‘s independence. However returning to the argument of PepsiCo having too many concessions or not, first as should have become clear now, the company was confronted with a govvernmental volatility and unwillingness to negotiate. It was rather a one-way game wherein PepsiCo had to agree with completely, or take its departure, as the company was not only faced with economic but also with moral issues (as mentioned above). Especially the confidence factor plays a great part in her which for the company turned out to be a rather costly factor as PepsiCo had to make various concession before they could enter the Indian market.

Relationships in Little Women and Cats in the Cradle

Relationships in Little Women and Cats in the Cradle Relationships can be positive or negative. Varied perceptions define the nature of relationships as positive or negative. The effects of positive and negative relationships have lasting consequences on individuals; having both a positive and negative aspect in each relationship assists humankind but negative relationships is the build up of decisions and actions that have negative impacts. Loyalty is one of the fundamental traits that are present in a positive relationship.However, little loyalty can lead to deterioration in a person’s quality of life, happiness and connection with the people involved in that relationship. The relationships in ‘Little Women’ by Louisa May Alcott and ‘Cats in the Cradle’ by Harry Chapin shows many different views of positive and negative relationships. Positive and negative relationships are defined by varied perceptions of the characters. Having both a positive and negative aspect in each relationship assists humankind to develop, learn, be happy and survive.Positive relationships are evident in ‘Little Women’ by Louisa May Alcott as well as negative relationships throughout the March family – this shows that they are not a perfect family and even though Little Women is set in the 1860’s, families today can relate to the relationship shown between the March family, especially the relationship Meg, Jo, Amy and Beth have with each other. They fight, love, care and help each other and through tough times, they always forgive each other.Here is a quote from ‘Little Women’ by Louisa May Alcott, â€Å"My dear, don’t let the sun go down upon your anger; forgive each other, help each other, and begin again to-morrow. † – Marmee to Jo, Chapter 8, Page 76. This quote shows endearment, â€Å"My dear,† demonstrates the positive relationship that Mrs March has with Jo and the love that the y share for each other. This quote simply implies that we should not let our fury or hatred live on even during our slumber.As much as possible, we must resolve our problems and reconcile. We should build each other in trust rather than destroy each other to strengthen bonds whether it may be in filial, romantic, or friendly relationships. Positive and negative relationships are defined by varied perceptions of the characters. Relationships can be negative at times and if these negative relationships are not resolved, it can impact all individuals involved for a long period of time.Negative relationships do not necessarily occur because of one poor influential mistake – it is the build up of decisions and actions that can have a negative impact and create a negative relationship between the interactions of two people. An example of a negative relationship is evident in ‘Cats in the Cradle’ by Harry Chapin between the father and his son. Here is a quote from †˜Cats in the Cradle’ by Harry Chapin, â€Å"And as I hung up the phone it occurred to me, he’d grown up just like me, my boy was just like me. † This quote shows irony.It is ironic that the son becomes like his father, in a different way than expected. It was expected that the son would want to be like the father in a career sense and this demonstrates the negative relationship that the father has with his son – not in a sense that they despise each other but putting off seeing and talking to each other creates a negative impacts throughout their relationship. Positive and negative relationships are defined by varied perceptions of the characters. Loyalty is one of the fundamental traits that are present in a positive relationship.Without loyalty doubts of trust and lack of respect begin to come to the fore and relationships begin to crumble. Within the relationship of Mr and Mrs March, loyalty is the most important factor of the relationship. Here is a quote from ‘Little Women’ by Louisa May Alcott, â€Å"That is the secret of our home happiness. He does not let business wean him from the little cares and duties that affect us all, and I try not to let domestic worries destroy my interest in his pursuits. Each do our part alone in many things, but at home we work together, always. – Marmee to Meg, Chapter 38, Page 392. This quote shows a back-story of Mr and Mrs March’s life – that they were not always like this and had the same problems that Meg has starting out married life, especially with children. This adds meaning to their current circumstances and if they did not find a way to work together and be together as much as possible, problems would have occurred but because of the above quote, Mr and Mrs March show loyalty to each other and create a positive relationships not only for themselves but also for others around them.Mrs. March suggests that the domestic sphere is a joint effort  œ husband and wife work together to create a home, instead of every aspect of it being the wife's responsibility. Positive and negative relationships are defined by varied perceptions of the characters. Within every relationship some form of loyalty will be present that contributes to the positive relationship. However, little loyalty can lead to deterioration in a person’s quality of life, happiness and connection with the people involved in that relationship. Cats in the Cradle’ introduces the subject matter indicating the troublesome relationship shared between father and son, â€Å"My child arrived just the other day, he came to the world in the usual way. † The quote is a metaphor for the birth of his son. It is an emotionless way to describe the birth of his son. This metaphor gives an initial indication of an absent relationship between the father and son. It is clear that although the father provides the necessities for the child, his career driven lifes tyle restrains him from spending quality time with his son.Positive and negative relationships are defined by varied perceptions of the characters. To sum up, varied perceptions define the nature of relationships as positive or negative. Mention topic sentences. The relationships in ‘Little Women’ by Louisa May Alcott and ‘Cats in the Cradle’ by Harry Chapin shows many different views of positive and negative relationships. The statement, relationships can be positive or negative, is true but positive and negative relationships coexist.

The Ethics Of Human Cloning - 2096 Words

With so many unknown secrets about our intricate minds and bodies, the human race stands easily as one of the most extraordinarily complex and mysterious species in the world. Since the beginning of time our race has been evolving with knowledge, constantly searching for a complete understanding of how we function, and how we can improve ourselves. Through various studies, researchers have thought of ways to modify the human body by means of medication, surgical procedures and other processes. One of these methods is through human reproductive cloning. The very prospect of cloning was introduced in the early 1900s, but only recently has made a notable impact on society. It truly is a thing of science fiction; a concept that most of society is familiar with through books and movies, but is not contemplated with much seriousness. But following the numerous successes in the cloning of animals and food that have piqued the interest of the scientific community, debates about the possibili ty and the ethics of human cloning have been brought about. But the question is: should these kinds of risky experiments be executed on human beings? Although the cloning of humans could potentially be beneficial, particularly to the world of medicine, the various dangers and downsides make cloning an unethical choice for impending scientific research and tests, and should not be practiced in the future. It is first very crucial to define exactly what cloning is, as well as its various types.Show MoreRelatedThe Ethics Of Human Cloning890 Words   |  4 Pages The ethics of cloning Early in 1997, Scottish scientist Dr. Ian Wilmot revealed to the world that he had successfully cloned an adult sheep, Dolly. With this invention, the world made a aggregate astonishment at the realization that cloning was no longer an aspect of a Science Fiction movie. Since then, human cloning has become one of the most expressing divergent topics in the world, discussions began regarding the ethic consequence of human cloning. In several recent opponents argue thatRead MoreHuman Cloning Ethics1908 Words   |  8 PagesKant and Kass Tackle the Cloning Dilemma Although there are some important benefits to the use of human cloning, there are also moral challenges as well. The benefits include eradicating defective genes and infertility and a quicker recovery from traumatic injuries among other advantages. However, the disadvantages are truly thought provoking as first an individual must answer the question, â€Å"When does a human life begin?† This paper will oppose the use of human cloning on the basis that life beginsRead MoreThe Ethics Of Human Cloning918 Words   |  4 Pagesdebates about the ethics of in-vitro fertilization, preimplantation, stem cell research, demographic control, for example, by sterilization, genetic modification for health or physical enhancement, and human cloning. The idea of human cloning is most interesting because it is most mysterious and very complex. The topic of human cloning inclusively brings up issues also raised in the mentioned technologies. Human cloning is of two types: therapeutic and reproductive. Therapeutic cloning aims to produceRead MoreThe Ethics Of Human Cloning Essay1927 Words   |  8 Pagesis created, and this act of reproductive cloning is regarded with controversy; is it morally permissible, or is it morally grotesque. There are certain elements to consider when debating the ethics of human cloning. Leon Kass in his article â€Å"The Wisdom of Repugnance† contends that reproductive cloning is morally corrupt, describing it as offensive, repulsive, and repugnant, believing these terms to be commonly associated with regards to human cloning. Kass goes forth with his arguments byRead MoreThe Ethics of Human Cloning Essay1294 Words   |  6 PagesHuman cloning is separated into two major categories; reproductive cloning, which uses cloning technology to create a human embryo that will produce an entire human, and therapeutic, which adopt cloning into field of medical practices to find a cure for many diseases (Kass). Reproductive cloning requires a somatic cell, a DNA-less egg, and a surrogate mother; as a result, it creates a new individual with the same genome, or genetic coding. The idea originated in Germany in 1938, but the first successfulRead MoreThe Controversy Concerning The Ethics Of Human Cloning1008 Words   |  5 PagesClones are humans. This statement embodies the crux of the controversy regarding the ethics of human cloning. If clones are humans, then they should receive the same rights as humans who were born ‘naturally’. But how do you determine humanity? The film Never Let Me Go (2010), ba sed on Kazuo Ishiguro’s novel of the same name, helps answer the question â€Å"Should we clone?† by establishing that humanity is more than the way one enters the world and by highlighting the unethical issues that may ariseRead MoreEssay about The Ethics of Human Cloning979 Words   |  4 PagesThe Ethics of Human Cloning In order to make a fully justified decision on whether human cloning is ethical or not, one must be exposed to the background of the subject. To start, a clone is an exact replica of an organism, cell, or gene. The process itself is done asexually with the use of a cell from the original human. It is then placed inside a female capable of bearing a child and is then born as a clone. Along with this comes questions of whether or not it is rightRead MoreThe Cloning Of The Human Genome And With No Standard Line Of Ethics951 Words   |  4 PagesThe issue at hand is that scientists are in a period of enlightenment with the human genome and with no standard line of ethics pertaining to editing human embryos in research development other countries are taking liberty to beat around the bush to explore this concept of eugenics. After the cloning of dolly the goat and China cloning two monkeys without a genetic blood disease through a process called CISPR society are asking the same question. Are scientists taking this too far before it is readyRead MoreEthics of Human Cloning and Genetic Engineering Essay1843 Words   |  8 PagesINTRODUCTION When the Roslin Institutes first sheep cloning work was announced in March 1996 the papers were full of speculation about its long-term implications. Because of this discovery, the media’s attention has focused mainly on discussion of the possibility, of cloning humans. In doing so, it has missed the much more immediate impact of this work on how we use animals. Its not certain this would really lead to flocks of cloned lambs in the fields of rural America, or clinically reproducibleRead More The Opposition to Human Cloning: How Morality and Ethics Factor in2864 Words   |  12 PagesThe Opposition to Human Cloning: How Morality and Ethics Factor in If a random individual were asked twenty years ago if he/she believed that science could clone an animal, most would have given a weird look and responded, â€Å"Are you kidding me?† However, that once crazy idea has now become a reality, and with this reality, has come debate after debate about the ethics and morality of cloning. Yet technology has not stopped with just the cloning of animals, but now many scientists are contemplating