Domestication History of Chickens (Gallus domesticus)

Domestication History of Chickens (Gallus domesticus) The history of chickens (Gallus domesticus) is still a bit of a puzzle. Scholars agree that they were first domesticated from a wild form called red junglefowl (Gallus gallus), a bird that still runs wild in most of southeast Asia, most likely hybridized with the gray junglefowl (G. sonneratii). That occurred probably about 8,000 years ago. Recent research suggests, however, there may have been multiple other domestication events in distinct areas of South and Southeast Asia, southern China, Thailand, Burma, and India. Since the wild progenitor of chickens is still living, several studies have been able to examine the behaviors of wild and domestic animals. Domesticated chickens are less active, have fewer social interactions with other chickens, are less aggressive to would-be predators, are less susceptible to stress, and are less likely to go looking for foreign food sources than their wild counterparts. Domestic chickens have increased adult body weight and simplified plumage; domestic chicken egg production starts earlier, is more frequent, and produces larger eggs. Chicken Dispersals Chickens, Chang Mai, Thailand. David Wilmot The earliest possible domestic chicken remains are from the Cishan site (~5400 BCE) in northern China, but whether they are domesticated is controversial. Firm evidence of domesticated chickens isnt found in China until 3600 BCE. Domesticated chickens appear at Mohenjo-Daro in the Indus Valley by about 2000 BCE and from there the chicken spread into Europe and Africa. Chickens arrived in the Middle East starting with Iran at 3900 BCE, followed by Turkey and Syria (2400–2000 BCE) and into Jordan by 1200 BCE. The earliest firm evidence for chickens in east Africa are illustrations from several sites in New Kingdom Egypt. Chickens were introduced into western Africa multiple times, arriving at Iron Age sites such as Jenne-Jeno in Mali, Kirikongo in Burkina Faso and Daboya in Ghana by the mid-first millennium CE. Chickens arrived in the southern Levant about 2500 BCE and in Iberia about 2000 BCE. Chickens were brought to the Polynesian islands from Southeast Asia by Pacific Ocean sailors during the Lapita expansion, about 3,300 years ago. While it was long assumed that chickens had been brought to the Americas by the Spanish conquistadors, presumably pre-Columbian chickens have been identified at several sites throughout the Americas, most notably at the site of El Arenal-1 in Chile, ca 1350 CE. Chicken Origins: China? Two long-standing debates in chicken history still remain at least partially unresolved. The first is the possible early presence of domesticated chickens in China, prior to dates from southeast Asia; the second is whether or not there are pre-Columbian chickens in the Americas. Genetic studies in the early 21st century first hinted at multiple origins of domestication. The earliest archaeological evidence to date is from China about 5400 BCE, in geographically widespread sites such as  Cishan  (Hebei province, ca 5300 BCE), Beixin  (Shandong province, ca 5000 BCE), and Xian (Shaanxi province, ca 4300 BCE). In 2014, a few studies were published supporting the identification of early chicken domestication in northern and central China (Xiang et al.). However, their results remain controversial. A 2016 study by Chinese bioanthropologist Masaki Eda  and colleagues of 280 bird bones reported as chicken from Neolithic and Bronze age sites in northern and central China found that only a handful could securely be identified as chicken. German archaeologist Joris Peters and colleagues (2016) looked at environmental proxies in addition to other research and concluded that the habitats conducive to jungle fowl were simply not present early enough in China to allow for the domestication practice to have taken place. These researchers suggest that chickens were a rare occurrence in northern and Central China, and thus probably an import from southern China or Southeast Asia where evidence of domestication is stronger.   Based on those findings, and despite the fact that southeast Asian progenitor sites have not as yet been identified, a northern Chinese domestication event separate from that of southern China and Southeast Asia does not seem likely. Pre-Columbian Chickens in America In 2007, American archaeologist Alice Storey and colleagues identified what appeared to be chicken bones at the site of El-Arenal 1 on Chiles coast, in a context dated before the 16th-century medieval Spanish colonization, ca. 1321–1407 cal CE. The discovery is considered evidence of pre-Columbian contact of South America by Polynesian sailors, still a somewhat controversial notion in American archaeology. However, DNA studies have provided genetic support, in that chicken bones from el-Arenal contain a haplogroup which has been identified at Easter Island, which was founded by Polynesians around 1200 CE. The founding mitochondrial DNA cluster identified as Polynesian chickens includes A, B, E, and D. Tracing sub-haplogroups, Portuguese geneticist Agusto Luzuriaga-Neira and colleagues have identified one found only in eastern Asia and one from Easter Island. The presence of the sub-haplotype E1a(b) in both Easter Island and el-Arenal chickens is a key piece of genetic evidence supporting the pre-Columbian presence of Polynesian chickens on the coast of South America. Additional evidence suggesting precolumbian contact between South Americans and Polynesians has been identified, in the form of ancient and modern DNA of human skeletons in both locations. Currently, it seems likely that the chickens at el-Arenal were brought there by Polynesian sailors. Sources Dodson, John, and Guanghui Dong. What Do We Know About Domestication in Eastern Asia? Quaternary International 426 (2016): 2-9. Print.Eda, Masaki, et al. Reevaluation of Early Holocene Chicken Domestication in Northern China. Journal of Archaeological Science 67 (2016): 25-31. Print.Fallahsharoudi, Amir, et al. Genetic and Targeted Eqtl Mapping Reveals Strong Candidate Genes Modulating the Stress Response During Chicken Domestication. G3: Genes|Genomes|Genetics 7.2 (2017): 497-504. Print.Là ¸tvedt, Pia, et al. Chicken Domestication Changes Expression of Stress-Related Genes in Brain, Pituitary . Neurobiology of Stress 7.Supplement C (2017): 113-21. Print.and AdrenalsLuzuriaga-Neira, A., et al. On the Origins and Genetic Diversity of South American Chickens: One Step Closer. Animal Genetics 48.3 (2017): 353-57. Print.Peters, Joris, et al. Holocene Cultural History of Red Jungle Fowl (Gallus Gallus) and Its Domestic Descendant in East Asia. Quaternary Science Reviews 142 (2016): 102-1 9. Print. Pitt, Jacqueline, et al. New Perspectives on the Ecology of Early Domestic Fowl: An Interdisciplinary Approach. Journal of Archaeological Science 74 (2016): 1-10. Print.Zhang, Long, et al. Genetic Evidence from Mitochondrial DNA Corroborates the Origin of Tibetan Chickens. PLOS ONE 12.2 (2017): e0172945. Print.

Industrial Project Management Essay Example | Topics and Well Written Essays - 2000 words

Industrial Project Management - Essay Example Comprising three people, the management team also had a works manager in the team, but what is quite surprising is that the seniority or position of the works manager was never formally acknowledged, leaving bitterness amongst the staff and the team. Ideally, once the works manager is part of the management, he should have been granted the status and powers to deal with the staff as a 'manager', but the indecisiveness is apparent all over in this decision as well. All this is because the company hierarchy and decision flow system is not well planned; instead it is being run as a family business with many lines of communication sending across conflicting signals to the workforce. This not only results in confusing the workforce but it also results in delay for the customer's deliveries. Such delays leave dissatisfied customer, and employees too find it difficult to face the customers advancing reasons for delays etc. This acts as a de-motivator for the workforce. The ad-hoc approach i s also visible in the way the chairman sends across his orders and directives. Chairman is of course within his rights to select people for particular tasks, but at the same time the chairman must not appear to be taking sides opening in favour of someone or against someone, on a routine basis. The favouritism is also apparent in salary reviews for the employees. It results in lowering the morale of other people in the company. Teamwork is also affected, because employees are wary of working with such people. The company is now operating at a small scale, but taking care of customer's preferences, and quality will go a long way in preparing the company for taking on the competition for a longer period, strengthening its financials and adding more value to its products. But as of now company doesn't have any quality standards in place. Today we are living in a competitive era and quality forms one of the important cornerstones for product differentiation. Performance Improvement Essentials For sustainable development the company will have to resort to a number of measures towards improving the motivation level of the workforce, breeding team spirit and for improving the overall outlook of the company. Some of the steps that the company can take are; Motivation for the workforce: Motivation in fact proves to be of strategic importance in an era when competition requires best use of the resources for value addition and customer satisfaction. In simplest terms motivation can be defined as a means of providing motives. Motives can act towards making or spoiling the work, towards doing a job more efficiently or for distorting the work environment. The lack of any positive motivation from the management often results in an automatic negative motivation. This could be defined as the state of an individual's perspective which represents the strength of his/ her natural inclination to exert efforts towards some particular behaviour. It is through their behaviour that employees give expression to their commitment to work, level of motivation and their attitudes. For this small manufacturing company, problems are many on the delivery front and role of the workforce becomes crucial to fulfil the

Independence of Women in Marriage in the Medieval Era Essay

Independence of Women in Marriage in the Medieval Era - Essay Example Furthermore, since a man writes her prologue, we cannot help but think about why he wrote it. This imaginary character gives Chaucer a chance to address several subjects that might have been forbidden during his time. By making use of irony and wittiness, Chaucer is able to construct statements regarding women and how they are dealt with. It is ought to be noted that Chaucer was definitely seeking to embody a woman's voice. Actually, by creating the Wife of Bath, we can presume he wanted to produce a memorable personality in her. In her Prologue as part of "The Canterbury Tales" by Geoffrey Chaucer, The Wife of Bath offers readers a complex portrait of a medieval woman. On the one hand, The Wife of Bath is shameless about her sexual exploits and the way she uses sexual power to obtain what she wishes. Alternatively, by doing precisely these things she is bearing out unconstructive stereotypes regarding women and showing that women are manipulative and deceiving. Although her performances might at first appear to be uprising against the male-dominated culture in The Canterbury Tales, and more commonly, the medieval era for women, there is very slight that she does that is in fact revolutionary or making powerful women of her time. Based even just on her introduction in "The Canterbury Ta... be seen as a parody of sorts since she embodies a number of negative female characteristics including stupidity and arrogance; deceitfulness, and lewdness. Although she is striking back at men it is not for any deeper reason other than personal profit. It appears that in this section of the prologue to the Wife of Bath's tale, Chaucer wants his readers to laugh at this character rather than admire her for her proto-feminist stances on life and marriage. If the wife character in the Wife of Bath is meant to destroy the label of women, one could visualize that she would employ in intellectual and informed discussion with some of the constituents of her party. As it positions, however, the nearest she comes to this is by presenting her twisted consideration of the Bible. Rather conceitedly she declares in one of the significant quotes from The Canterbury Tales (and The Wife of Bath's Tale particularly), "Men may divine and glosen up and down / But well woot I express withouten lie / God bad us for to wexe and multiplye / That gentil text can I wel understone" (lines 26-30). While it can be found in the Bible that humans should procreate, it is worth noting that she prefaces this statement with a few words about how men sit and interpret the Bible. In her Prologue in the "Canterbury Tales" by Chaucer, the Wife of Bath is claiming that she too is capable of doing this and that the text is not beyond her reach. Yet, the setback with this is that she is not confirming anything about her cleverness; she is simply trying to prove or defend her loose actions along with the word of God. The Wife's symbolic techniques, however unscrupulous, achieve the desired results. The spectators cannot present instantaneous counter-arguments, and if we visualize her in the dramatic condition

Differences Between Traditional Mail And Electronic Mail Information Technology Essay

Differences Between Traditional Mail And Electronic Mail Information Technology Essay Introduction Electronic mail, better know as e-mail, is the transmission of messages and files via a computer network. E-mail has become a very important way of exchanging messages and files between coworkers, students and teachers, friends and family. People all over the world are using e-mail. Its fast and best of all its cheap! In this paper I will discuss differences between traditional mail and electronic mail. We will explore some of the ways businesses use email in the workplace. I will also discuss how teachers are integrating email into the classroom. Lastly, I will discuss a few electronic mail securities issues that everyone needs to be aware of. Email In The Work Place Over the years, people, especially businesses, have adopted email as their general form of day to day communication mostly because of its speed. Email communication has almost instant feedback. This makes email much more conversational than traditional paper mail or snail mail as it is commonly know today. With snail mail, writers and recipients are forced to wait days to complete communication. Yes, we have fax machines and telephones to speed up the process, but who wants the hassle when you can use email! Distribution List. If you have to send emails to a number of recipients on a routine basis, it can be a chore to have to type every persons email address over and over again. Group distribution lists make this job simple. Below are the steps to setup a distribution list in Microsoft Outlook. Access the email account where you wish to create the distribution list. Use the mouse to highlight the name(s) in the To and CC box. These names will be copied to the distribution list. To select multiple names, hold down the SHIFT button and highlight accordingly. Click EDIT and COPY. Click FILE, and then NEW. Next, click DISTRIBUTION LIST. Type in the name you want for the group. A distribution list can be labeled anything from My Staff to My Friends. Type the appropriate name into the NAME box. Click SELECT MEMBERS. Click on ADD TO DISTRIBUTION LIST. Next, right click PASTE or hold the CTRL and V button down at the same time. Open a new email message. Click on To. Choose your new distribution group. Compose and send an email. Organize Schedules Appointments. Whether you are a COE of a major company or the president of an extracurricular activity group in school email has all the features you need for scheduling and managing appointments, meetings, and tasks. Using Email calendar components, managers can schedule meetings and appointments, and assign tasks for the other members of the group. Emails also let you store miscellaneous information using notes. File Attachments. In some situations, a simple email message is not sufficient to get the required information to the recipient. In these cases, you may want to attach a file to your email message. Email allows you to attach almost any kind if file to your message. You may need to send a Word document, an Excel worksheet, a picture, or any number of file types. Email lets you do it all. EMAIL IN SCHOOLS Keypals. Email is a wonderful way for your class to connect with your students in another part of the country, or perhaps another part of the world. In addition to practicing their English writing skills, your students can learn, first hand, the geography, culture and language of their keypals. Web Mentors. Mentor programs often include lists of mathematics, scientists, historians, and other professionals who have generously volunteered to assist with class project. Homework Assignments. If all your students have regular access to individual e-mail accounts (lucky them!), you might want to distribute homework assignments or bonus questions using e-mail. Some teachers even make their email addresses available for homework questions. If you plan to use email to distribute assignments and questions, here are some tips that will make things run more smoothly: Make sure your students are email savvy. Before you send your first email assignment, spend a few classroom lessons on email basics. Let your students know the time and day that you will be sending the assignment so they know to check their mail. Be specific with your message subject title. Instruct your students to use the Reply to Sender button. This way you can sort your mail using the subject title that you have specified. EMAIL ETIQUETTE SPAM or Junk Mail. SPAM is the sending of unsolicited messages. Most people hate getting junk mail. It also slows down the networks and is generally a waste of valuable, limited resources. Businesses have found that junk mail is an easy and inexpensive way to send promotional material. Dont send unwanted email Flaming. Flaming is when someone uses all capital letters in a message. This usually means that the sender is yelling or angry. This can be very offensive. Remember, once you send an email message, you can not erase it or take it back. Messages may be saved, read by others, or even forward to others with out your knowledge. Internet Hoaxes Virus Myths. Dont be fooled by internet hoaxes and computer virus myths. Before you send your so called virus alert check with your IT department to see if its real. Dont open an attachment or click on a link in an email from some one you dont know. If the content email looks suspicious, but it is some one you know- dont open until you clarify with the sender first. It may be infected with a virus. CONCLUSION In conclusion, Email is a wonderful way to communicate with others. Email has become a very important way to communicate and share files with coworkers, students, friends, and family. Hopefully you have found some new and interesting ways to use email in the workplace, and in school. Also dont forget to use proper email etiquette and watch out for internet hoaxes when sending messages.

Diploma in Business Essay

Describe how marketing techniques are used to market products in two organizations.P2- describe the limitations and constrains of marketing.M1- compare marketing techniques used in marketing products in Two organizations. Answer: P1 – I am going to be talking about how marketing techniques are used to market products in two different organizations.Marketing is the process of understanding the market, within which a business operates and satisfying customers, needs in order to meet the objects of the business. The role of marketing within a particular organization will depend on the organization overall objectives. The object of many businesses is to make a profit, but it not the purpose of many voluntary and public (government owned) organization, although marketing is as equally important for them. In order successfully identify, anticipate and satisfy customer ‘needs, a businesses need to carry out market research to assess its competitive position and its customersâ⠂¬â„¢ needs.Once a business knows more about its customers and competitors it can set clear and smart marketing objectives. Unit 1 Different types of business activity and ownership Pass 1 A) Type of businesses activity If I live in a city of any size especially in an area where new people are moving in people are increasingly using the Internet to find local businesses. Microsoft can’t be local because people search jobs by region: United States, Europe and Asia etc. Oxfam is a local as well such as located in Watford High Street. Some of the businesses that can be helped by local Internet marketing include: chiropractor, computer retailer, travel agent, locksmith, massage therapist, insurance agent, real estate agent, mortgage broker, maid service hardware retailer, plumber, auto repair etc. How to use the Internet to market a local or regional business. There are many businesses in UK. It is located sites across a country. For example, Microsoft Company is found in Cambridge that is UK. Of course Oxfam is collecting money to save people and it is every where in the UK, i.e. London, Hertfordshire , Oxfordshire and Birmingham etc. they will be called National Businesses. An International business company is a legal entity incorporated in a tax haven which is free from all local taxes (except small fixed annual fees). Typically the IBC  cannot conduct business in the country of incorporation. Oxfam International is a confederation of 13 organizations working with over 3000 partners in more than 100 countries to find lasting solutions to poverty and injustice. Microsoft International Careers Newsletter, a free quarterly e-publication that will give us timely information on career opportunities at Microsoft, i.e. from Europe somewhere else. Both Microsoft and Oxfam are global companies, but Microsoft careers can take us to a global presence. They offer opportunities around the world to make an impact with the next generation of technology they’re building today. Political factors: include legal aspects (e.g. Microsoft copyright), the general political ethos. Economic factors: Marketers need to consider the state of a trading economy in the short and long-terms. This is especially true when planning for international marketing. to look at: Economic factors include the effect of the economy ( e.g. Interest rates) on individuals, and on organisations. Social factors: The social and cultural influences on business vary from country to country. It is very important that such factors are considered. Factors include demographic change (e.g. Oxfam is concerned of changes in proportion of age groups and educational changes.), other changes in social habits (where people go to shop, leisure expectations), Technological factors: Technology is vital for competitive advantage, and is a major driver of globalization. Consider the following points: There are obviously a wide range of technological factors affecting libraries and information centres (e.g. Microsoft Internet, telecommunications, and the media in which people expect to find information). Section 2 National and international laws: International laws are created by international bodies; in particular Britain can be affected by European Union laws. The European Union courts are increasingly important in making judgements which apply across the Union. European Union laws are regarded as having supremacy over national laws. * Employment: Over time a body of law or legislation has developed governing employer/employee relations and the rights of employees and employers in the workplace. The Working Time Directive, 1999 Both businesses must guarantee to all employees a maximum 48 hours working week, and a four week holiday. Employees can choose to opt out of the Working Time requirement and agree to work longer hours if they wish. * Contracts: Oxfam employees have rights under their contract of employment. An employment  contract is a legal agreement between an employer and an employee, setting out the terms on which one agrees to employ the other. The plan must set out where the business wants to go, the aims and objectives, and details of how they will accomplish these aims; it is referred to as the strategy. Aims and objectives: The aims of the companies depend on the kind of business they are. For example, the aims of Oxfam will be quite different from those of Microsoft. A firm needs to have a clear sense of direction that should be clearly communicated to all stakeholders. The aims of the businesses that can be split into objectives. The objectives set out more specifically how the aim can be achieved. For example, the aim of the Microsoft is to be the world’s leading software supplier. The objective is to undercut the price of rivals; to take over other similar makers; to increase sales by giving discount price to the customers so this shall increase the needs of the company. Internal structures: The two chosen businesses are Microsoft and Oxfam vital to generate a structure that will enable them to better meet the needs of their stakeholders. For example, an essential part of the structure of a private company is the Board of Directors with the MD at the top. By giving high priority to the Board means that the interests of the owners (stakeholders) are given priority. However, the companies need to predict for the customers that are very significant organisational structure needs to ensure there are obvious links to customers. For example, the businesses can give priority to the position of customer service managers. Make a judgement about the importance of these factors on the organisation concerned. Factors Organisations can be concerned on Political Funding Wars and conflict Government policies Elections Political trends Government term and change Trading polices Economic Interest and exchange rates Taxation changes specific to product/services Disposable income Job growth/unemployment Import/export ratios Production level Internal sources of finance i.e. banks, hire purchase, leasing and etc.

UU114 Assign 1 Essay Writting - 1536 Words

Course Name: English for Academic purposes Course Code: UU114 Title: Evaluate the benefits and drawbacks for censorship for a society Discussion essay – Block pattern Title: Evaluate the benefits and drawbacks for censorship for a society C: Censorship L: benefits, drawbacks and Society D: Evaluate Introduction Context: Social issues Subject: Censorship Limited subject: benefits, drawbacks and society Issue: Censorship can have shortcomings but at the same time it is beneficial under some circumstances Thesis statement: Despite the fact that censorship is seems socially beneficial, this essay will also show some ideas that raise suggestions about its drawbacks for a society’s progress. Supports for the thesis: Side 1:†¦show more content†¦. The Public is heavily dependent on the media of any form to provide significant information concerning the government progress and other related issues. Unfortunately the governments officially take advantage of any available media for its own interest by manipulating what is truly and right to be written or announced for the public. In fact â€Å"the media appears to be more of a government propaganda arm rather than a servant of the people and a check on the government† (Mocnaj, 2013). This is the case in Croatia but it probably appears applicable in other governmental states as well including some of the Pacific Islands Countries. Media press and its employees are actually victimized by this act, since staffs can be sacked or the employer can be closed down for presenting what is right and true for the public awareness. Therefore there is no other way for both the employers and employees to write or announce what is truly right to be on their media but to express what they were told to do so by the government. Furthermore the progress of creativity or free flow of ideas within the society is also adversely affected as a result of censorship. In most cases, new ideas by individuals never rich the public because censorship authorities prevent it from happen. Whereas the public should have a role in expressing their opinion on the new ideas and could have had the opportunity to change or improve it for

Obesity Is The High Consumption Of Junk Food - 1046 Words

Obesity in the United States has been increasingly cited as a major health issue in recent decades. In 2010, the Centers for Disease Control and Prevention (CDC) reported 35.7% of American adults as obese and 17% of American children. Obesity is obviously a big problem in America. One of the major causes of Obesity in America is the high consumption of junk food. In order to combat America s obesity problem, junk food must be made less appealing to the public. Lack of exercise and genetics also result in the build of fat on an individual. The high consumption of junk food is one of the major causes of the high obesity rates America faces. The increased availability and relatively low costs of this junk food make it appealing to the masses. One may ask, is Obesity really a disease? If so, what can be done to solve the problem? I will explain the arguments for, against, and under certain circumstance(s) and conclude with my preferred position on rather Obesity is a disease. There are two main types of argument used to support rather or not obesity is a disease. According to The American Medical Association s Council on Science and Public Health Report, they identified three criteria to define what a disease is and it was found that something is a disease, if 1. an impairment of the normal functioning of some aspect of the body; 2. characteristic signs and symptoms; and 3. harm or morbidity. Obesity causes impairment, has characteristic signs and symptoms, andShow MoreRelatedShould Junk Food Be Taxed More?1738 Words   |  7 PagesShould Junk Food be taxed more to discourage consumption? 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