Relationship of Neanderthals to Modern Humans

Relationship of Neanderthals to Modern Humans After extracting ancient DNA from the 40,000-year-old bones of Neanderthals, scientists have obtained a draft sequence of the Neanderthal genome, yielding important new insights into the evolution of modern humans. No other ancient people have aroused more controversy and confusion over the last century and a half than have the Neanderthals (3,4). There is an on-going debate as to whether they should be considered Homo sapiens.While the idea that modern humans originated in Africa and spread out to other parts of the world is widely accepted, several scenarios have been proposed to account for the replacement of neanderthal populations. The multi regional hypothesis holds that neanderthal populations in Eurasia and Africa were held together by gene flow. Fossil and genetic evidence supports an African origin for Modern Humans (1,3,5,9,10).A decade after scientists first cracked the human genome, researchers announced that they have done t he same for Neanderthals, the species of hominid that existed from roughly 400,000 to 30,000 years ago, when their closest relatives, early modern humans, may have driven them to extinction (1,3,5,9,10). Led by ancient-DNA expert Svante Paabo of Germany's Max Planck Institute for Evolutionary Anthropology, scientists reconstructed about 60% of the Neanderthal genome by analyzing tiny chains of ancient DNA extracted from bone fragments of three female Neanderthals excavated in the late 1970s and early '80s from a cave in Croatia (6,8).The bones are 38,000 to 44,000 years old. The genetic information turned up some intriguing findings, indicating, for instance, that at some point after early modern humans migrated out of Africa, they mingled and mated with Neanderthals, possibly in the Middle East or North Africa as much as 80,000 years ago (5,7,10). If that is the case, it occurred significantly earlier than scientists who support the interbreeding hypothesis would have expected. Com parisons with DNA from modern humans show that some Neanderthal DNA has survived to the present (3,4,7).Moreover, by analyzing ancient DNA alongside modern samples, scientists were able to identify a handful of genetic changes that evolved in modern humans sometime after their ancestors and Neanderthals diverged, 440,000 to 270,000 years ago (2,4). Researchers compared the Neanderthal genome with the genomes of five living people: one San from southern Africa, one Yoruba from West Africa, one Papua New Guinean, one Han Chinese and one French person (2,4,6).Scientists discovered that 1% to 4% of the latter three DNA samples is shared with Neanderthals — proof that Neanderthals and early modern humans interbred. The absence of Neanderthal DNA in the genomes of the two present-day Africans indicates that interbreeding occurred after some root population of early modern humans left Africa but before the species evolved into distinct groups in Europe and Asia (1,3,5,9,10). All stu dies of Neanderthal genomic DNA use material obtained from fossilized Neanderthal bones that are tens of thousands of years old.As one might expect, the quality of the material that can be recovered from such specimens is very poor, as DNA degrades over time. Consequently, there is wide variability in DNA preservation among available Neanderthal specimens, and most Neanderthal bones yield no usable DNA (2,3,4). When present, Neanderthal genomic DNA is recovered in short (50- to 100-bp) fragments (2,3,4) The information content of Neanderthal DNA is also degraded: Individual nucleotides are subject to chemical modification, with deamination of cytosine to uracil the most common lesion (2,4).Moreover, the fragments of Neanderthal genomic DNA are mixed with microbial contaminants that constitute >90% of the recovered DNA. The amount of DNA damage and microbial contamination are dependent on ambient environmental conditions: The ancient specimens that have provided the most intact DNA a re mammoth remains recovered from permafrost. These specimens often include preserved hair shafts and soft tissues from which relatively high-quality DNA can be recovered (2,4,5).None of the Neanderthal specimens providing the DNA for whole-genome sequencing approach this level of preservation (2,4,5,6). In addition to these challenges, ancient specimens frequently become contaminated with modern human DNA during handling and DNA extraction (2). This poses obvious problems for distinguishing modern human from Neanderthal DNA, since the frequency of single-base mismatches between the two genomes is estimated to be

These famous people failed at first, then found success

These famous people failed at first, then found success Ever get discouraged because you feel like nothing’s going your way? Or maybe you’ve been at it for a few years and just feel that you aren’t where you should- or want to- be. Chances are, you’re being too hard on yourself and not allowing for the normal ebb and flow of failure that leads to most success. Don’t believe it? We have proof. Here are 10 people who totally failed at first and then went on to achieve great success, fame, and fortune! Use them for inspiration when next you’re getting down on yourself.1. R.H. MacyYou probably don’t know this guy by name alone, but chances are you’ve shopped at one of his stores. That’s right, the founder of Macy’s department stores managed to fail at seven early business attempts before landing on the perfect breakthrough with his first NYC store.2. Bill GatesFirst, he dropped out of Harvard. Then, his first business was a failed company you’ve likely never heard of called Traf-o-Data. But his next company, Microsoft, did much better. Much,  much better.3. Albert EinsteinAs a kid, Einstein didn’t speak until he was four years old. In fact, he couldn’t read until the age of seven- his parents and teachers thought he might not be very bright at all. He was expelled from school and denied admission to Zurich Polytechnic. But then he went on to become such a success in his field that his name is now used as a synonym for â€Å"genius† all over the world.4. Steven SpielbergSpielberg was rejected from USC’s School of Theater, Film, Television three times, then dropped out of Cal State, Long Beach. He eventually went back and finished school in 2002, but only after becoming the big-budget award-winning smash success he is today.  5. J.K. RowlingThe billion dollar empress of the Harry Potter franchise? She was a divorced, depressed, and penniless single mother attending school while on welfare. Now she’s one of the richest women in the world.6. Tyler PerryFrom a rough abusive childhood, high school expulsion, and two attempted suicides, Tyler Perry went on to work several jobs and try to build his career. At one point, he sunk everything he had into his first film, which flopped spectacularly. He kept at it, though (even sleeping in his car) and now he’s one of entertainment’s most respected and highest paid men.7. Emily BluntThe award-winning acclaimed actress had a terrible stutter until the age of 14. But Blunt was encouraged to do theatre, which changed everything. Through hard work and gigs that asked her to play different characters and use different accents, she was able to overcome her stutter and become an international film star of the first degree.8. Vera WangFashion designer Vera Wang failed first at figure skating when she didn’t make the 1968 Olympic team. She then became a Vogue editor, but was passed over for a coveted promotion. At the age of 40, she s tarted designing wedding gowns and, well, the rest is history. She’s now worth over a billion dollars. She’s even come full circle by designing costumes for Olympic figure skater Nancy Kerrigan.  9. Lucille BallEveryone loves â€Å"Lucy,† but before this sitcom star was tearing it up with husband Desi Arnaz on cable, she was considered the â€Å"Queen of B Movies† because the only work she could get was on second-tier films people found silly. She’s now remembered as one of the funniest and most accomplished comediennes of all time.

Its all in the family essays

Its all in the family essays A part of family structure is family dynamics, which together create a family unit. Family, by dictionary definition, means the parents and children alone; the children as distinguished from the parents. This reveals how the relationships within the family are important. It is the Parents and Children alone and how they interact that can exhibit a family tie. When a parent and child connect, it starts a thread in the bracelet of that certain family, and, depending on how many bonds there are in the family, shows how tightly woven that bracelet is. The bonds hold the family together. The novel, Pride and Prejudice, by Jane Austen, illustrates a family in which the members tend to have small bonds with those that are similar to them. My family, on the other hand, demonstrates the opposite, where the differences bring members together to form more secured bonds. A weakness in a family is the difference between parents and it is the most tremendous feebleness when it comes to the point where everything that is being said has a second meaning. When the reader first opens the novel, he/she reads a dialogue between Mrs. Bennet and Mr. Bennet. It is a typical dialogue for the Bennets. There is so much confutation that the reader knows from that point on that the Bennet's relationship is no "great" relationship. Since Mrs. Bennet is a phony, claustrophobic, sheltered woman, and Mr. Bennet is a funny, sarcastic, realistic man, the two tend to disagree a lot. Mrs. Bennet believes she is perfectly sane and that the most important thing is to have her children married off well. Although, Mr. Bennet sees it as a huge joke and believes the girls should marry whom they want and should spend their time doing what they please. Even on the first page of the entire novel Mrs. Bennet is over excited about Bingley's arrival; "OH! Single, my dear, to be sur e! A single man of good fortune; four ...

5 Bad Ways to Demonstrate Your Interest in a College

5 Bad Ways to Demonstrate Your Interest in a College Demonstrated interest is an important and often overlooked piece of the college admissions puzzle (read more: What Is Demonstrated Interest?). Colleges want to admit students who are eager to attend: such students help the college get a high yield from their pool of admitted students, and students with strong demonstrated interest are less likely to transfer and more likely to become loyal alums. For some good ways to succeed on this dimension of your college application, check out these eight ways to demonstrate your interest. Unfortunately, many applicants (and sometimes their parents) who are over-eager to demonstrate interest make some bad decisions. Below are five approaches you should not use to demonstrate your interest. These methods could hurt your chances of getting an acceptance letter rather than help. Sending Material the College Did Not Request Many colleges invite you to send in whatever supplemental materials you want to share so that the school can get to know you better. This is especially true for liberal arts colleges with holistic admissions. If a college opens the door for extra materials, dont hesitate to send along that poem, performance recording, or short athletic highlights video. That said, many colleges and universities specifically state in their admissions guidelines that they will not consider supplemental materials. When this is the case, the admissions folks can get annoyed when they receive that package with a draft of your novel, that letter of recommendation when the school doesnt consider letters, or that album of photos of you traveling through Central America. The school is likely to discard these items or waste valuable time and resources mailing them back to you. What You Think Youre Saying: Look at me and how interesting I am! Im so eager to attend your school that I sent you a giant envelope full of extra stuff! What You Are Actually Saying: Look at me! I dont know how to follow directions! Also, I dont respect your time. Im sure you can spend an extra 45 minutes on my application! Trust me, when schools say they wont consider supplemental materials, they are telling the truth and you should follow their admissions guidelines. Calling to Ask Questions Whose Answers are Readily Available Some students are so desperate to make a personal contact in the admissions office that they come up with weak reasons for calling. If you have a legitimate and important question that is not answered anywhere on the schools website or admissions materials, then you can certainly pick up the phone. But do not call to ask if the school has a football team or honors program. Dont call to ask how big the school is and whether or not students live on campus. This type of information is readily available online if you take a few minutes to look. What You Think Youre Saying: Look how interested I am in your college! Im taking the time to call and ask questions! What Youre Actually Saying: Look at me! I dont know how to research and read! The admissions folks are remarkably busy people in the fall and winter, so a rather pointless phone call is likely to be an annoyance, especially at selective schools. Harassing Your Admissions Representative No applicants deliberately harass the person who holds the key to their admission, but some students inadvertently behave in ways that are unwelcome if not uncomfortable from the perspective of the admissions staff. Do not email the office daily with well wishes or fun facts about yourself. Do not send gifts to your admissions representative. Do not show up at the admissions office frequently and unannounced. Do not call unless you have a truly important question. Do not sit outside the admissions building with a protest sign that says Admit Me! What You Think Youre Saying: Look how persistent and clever I am! I really, really, really, really want to attend your college! What Youre Actually Saying: Look at me! I enjoy disrupting your day, and Im also a bit creepy with stalker-like tendencies. Having a Parent Call for You This one is common. Many parents have the admirable quality of wanting to do all they can to help their kids succeed. Many parents also discover that their kids are either too shy, too disinterested, or too busy playing Grand Theft Auto to advocate for themselves in the college admissions process. The obvious solution is to advocate for them. College admissions offices often get more calls from parents than students, just as college tour guides often get grilled more by the parents. If this type of parent sounds like you, just keep in mind the obvious: the college is admitting your child, not you; the college wants to get to know the applicant, not the parent. What You Think Youre Saying: Let me ask questions to demonstrate how interested my child is in your college. What Youre Actually Saying: My kid is so disinterested in college that Im doing all the work of choosing a school and applying. My child lacks initiative. A parents role in the admission process is a challenging balancing act. You need to be there to motivate, support, and inspire. The application and questions about the school, however, should be coming from the applicant. (Financial issues can be an exception to this rule since paying for school is often more of a parents burden than the students.) Applying Early Decision When a College Isnt Your First Choice Early Decision (as opposed to Early Action) is a binding agreement. If you apply through an Early Decision program, you are telling the college that it is your absolute first choice school, and that you will withdraw all other applications should you be admitted. Because of this, Early Decision is one of the best indicators of demonstrated interest. You have made a contractual and financial agreement indicating your unquestionable desire to attend. Some students, however, apply Early Decision in an effort to improve their chances even when they arent sure if they want to attend the school. Such an approach often leads to broken promises, lost deposits, and frustration in the admissions office. What You Think Youre Saying: Look, youre my first choice school! What Youre Actually Saying (if you break your ED contract): Im dishonest and selfish, and you might want to contact competitor colleges to inform them of my breech of contract. A Final Word Everything Ive discussed herecalling the admissions office, applying Early Decision, sending supplemental materialscan be a helpful and appropriate part of your application process. Whatever you do, however, make sure you are following the colleges stated guidelines, and always put yourself in the shoes of an admissions officer. Ask yourself, do your actions make you look like a thoughtful and interested candidate, or do they make you appear inconsiderate, thoughtless, or grasping?

Haven't decide it yet Essay Example | Topics and Well Written Essays - 1250 words

Haven't decide it yet - Essay Example Convergence in the world of media is about having a collusion between two or more businesses that uses the Internet as a medium in order to attract more consumers to patronize their products and services. By increasing the scope of the services a telecommunication is offering its target consumers, the company is creating competitive advantages against its competetitors. relationship into the practice of franchising within the same company. In the book of Henry Jenkins entitled â€Å"Convergence Culture: Where Old and New Media Collide†, the author discussed convergence as a cultural process that integrates the use of images, sounds, brands, and business relationship among the different media system. Considering the fact that the business relationship among the different types of media system is being integrated, this study will conduct a primary and secondary research to examine and determine how it is possible to franchise media in a telecommunication company. The total number of Internet users in the United States has reached 427,569,939 or 46.1% of America’s total population as of 2009 (Internet World Stats). Because of the continuously increasing number of Internet users all over the world, the existence of the Internet has been classified by Jenkins as an â€Å"active medium† (Jenkins, Confessions of an Aca-Fan). In the absence of integrating the telecommunication services with the access to the Internet, the presence of the mobile phones are considered a â€Å"passive medium† (ibid). Based on the recent Internet World Stats report, the total number of Internet mobile broadband subscribers in the U.S. market has reached a total of 69,902,289 as of the end of second quarter of 2009 (Internet World Stats). In line with this, the 0.92% increase in the total number of mobile broadband users signifies the need for telecommunication companies to keep on improving the mobile services they render to the public. Convergence in media is referring to the

Maksim Litvinov And Soviet Foreign Policy During The 1930s Essay

Maksim Litvinov And Soviet Foreign Policy During The 1930s - Essay Example When the party separated into two factions, he joined the Bolsheviks faction and formed a strong bond with several party members; one of these was Joseph Stalin (Roberts, 1953). Subsequently, Litvinov spent the next fifteen years journeyed west Europe on varying tasks to instill and strengthen the Bolshevik ideology. He adopted many guises and aliases to help him steer clear of the police. Among his errands were smuggling guns to aid revolutionaries in Russia. He was arrested in Paris in 1907 after a bank heist masterminded by Stalin. Though many of his attempts to help the cause were unsuccessful, hid unwavering and constant labors made him a hero in the eyes of his comrades (Roberts, 1953). After the 1917 Bolshevik Revolution concluded, Litvinov campaigned the cause in Britain but was expulsed because of the British discontent over the treatment of compatriot Bruce Lockhart in Moscow. In addition, he was also evicted from Britain because of his pacifist beliefs. After returning to Moscow, he was given the position of Commissariat of Foreign Affairs. He handled many significant and high-profile assignments for his government, notably bringing the Soviet-Estonian clashes to a standstill and initiating talks with the President of the United States, Woodrow Wilson (Roberts, 1953). Four years after his assignation, he was promoted to deputy commissar of foreign affairs in 1921, under the eye of Georgi ChicherinLitvinov's relationship with Chicherin were turbulent, as they both held opposing views on policies, as well as having contrasting and strong personalities. In spite of this, Litvinov's career as a diplomat flourished under Chicherin, whom he served for almost a decade. In 1928, he initiated proposals focusing on total disarmament, instead of following standard formulas or ratios favored by the USSR. He later became the commissar when his superior, Chicherin, was forced to retire due to ill health (Roberts, 1953). CAREER HIGHLIGHTS AND ACHIEVEMENTS In many standards and principles, Litvinov deserved his place in Soviet history because of the degree of successes he garnered in the name of his country which also played and have a huge impact on other nations. When Hitler ascended to power through the powerhouse generated by his Nazi Party, Litvinov immediately recognized the significance of this event (Dunn, 1988). In 1933, he spoke of a need to change the direction of Soviet foreign policy to counteract the influence of Nazi Germany under Hitler. He managed these changes through the establishment of diplomatic contact with the United States and other Western powers. He was also instrumental in the institutionalization of the League of Nations, the predecessor of the United Nations. His conviction in resisting and containing fascism was well-known. In addition, his name was etched in the global spheres when he became the proponent of collective security (Dunn, 1988). TRADE AGREEMENTS FOR SOVIET FOREIGN POLICY AND GOVERNMENT RECOGNITION When Stalin came into power, he restructured USSR's policies towards foreign trade in order to abolish and curtail free and private trade practices. In anticipation of the irregular and what he deemed disruptive market forces that come with foreign trade, Stalin placed all activity and policies on foreign trade under state control. In addition, Stalin created monopolies on particular goods, with

Internet-Based Company and IT Systems Essay Example | Topics and Well Written Essays - 250 words

Internet-Based Company and IT Systems - Essay Example For instance, Google recently introduced "Google My Business," a platform that gives companies the opportunity to interact with customers. The company uses this application to interact with customers. The "Google My Business" integrates a variety of tools, such as Google Maps, Search, Hangouts, Insights and Google +. These tools allow business to manage their online presence at once (Nassivera, 2014). Through My Business, companies can manage information and respond faster to customer reviews. Additionally, the service enables businesses to have easy access to data about customers and their engagements. This implies that businesses using the IT tool are able to engage easily with their customers and respond faster to their queries, thereby helping build better customer relations. My Business tool also enables companies to add photos and videos about their businesses and respond to customer reviews with a lot of ease. Moreover, companies using the My Business are able to connect to customers through Google Hangout and Google+, thereby helping companies interact better with their customers (Nassivera, 2014). In the end, the companies are able to maintain close contact with customers thereby helping build a better customer relation and loyalty. Nassivera, J. (2014, June 12). Google introduces My Business service to improve company and customer relationship. HNGN, p. 1