...There are two different types of twins: Dizygotic= fraternal or non-identical Monozygotic= identical Fraternal twins happen when two separate eggs are released at a single ovulation and are fertilized by two different sperm. These two fertilized eggs then implant independently in the uterus. Fraternal twins share the same type of genetic relationship as non-twin siblings. These are also the most common form of twins; a reason for having fraternal twins is the age of the mother at conception. The chance of fraternal twins is more prevalent in women 35 years of age and older. And yet another growing cause of fraternal twins is the use of fertility treatments. Identical twins develop when one egg is fertilized by a single sperm and during the first two weeks after conception, the developing embryo splits into two. As a result, two, genetically identical babies develop. The exact reason why identical twins happen is still a mystery. Over the years there has been a lot of research and time invested into finding out why some zygotes split into two and others don’t. But the truth is we still do not know why. In reality, the splitting of one fertilised egg is a malformation of the natural processes of conception. Twins are very valuable to scientific research because they allow researchers to study the relative importance of environmental and genetic influences on people. In other words, how much of someone's personality and appearance is based on their environment and how...
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... Siamese twins are twins that bodies are attached together at birth. There are more than twelve types of Siamese twins, depending on where the twins are attached. The twins may have all the organs and other structures they need, or only the vital organs such as their heart. Each twin need to be treated to have an independent healthy life. In addition, Separation is extremely risky and threatening the twins’ life, especially if they are sharing a vital organ, because in many cases, the surgeries end the life of one or both the twins. • Introduction Siamese twins are identical twins born with their bodies at some points and having varying degrees of residual duplication, this is a result of the incomplete...
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...Twin Brothers Audience: Best friend "Clustering" was the prewriting technique that I used to generate ideas and to also help visualize how the ideas might logically relate. As clustering help generate some ideas, it also gave me a sense of organization. Clustering was very beneficial with this week assignment because it allowed me to see how the various facts and ideas might be logically related. On the surface, my brother and I are very identical, yet we have our own distinctive personalities. At times we may have similar connections, but at the end of the day we are each our own individual (or you could use person) own individual . My twin brother and I love to play extreme sports. My brother loves to play basketball and I football. One day, while my brother was playing basketball at the courtyard, he fell and landed on his left arm and was taken to the hospital. After a check-up, Doctors doctors found he had broken his left arm. A few weeks later, I was playing football after school and got tackled down to the ground, where I and landed and injured my left arm. I was taken to the hospital and after a check-up; , Doctors doctors found that I had broken my left arm. My brother and I have many memories where many coincidence coincidental accidents have happened to us, ; however, the connection we do have, and our distinctive personalities, helped us move forward with whatever life threw at us. Hello Matthew- some of the rewording I entered above is just...
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...Summary This article discusses about twins separated and the genetic of personality differences and concentrated on studies that have been made in 1979 by the Minnesota Study of Twins Reared Apart ( MISTRA). In the research, the researcher focused on two aspects of cognitive and personality. However, in this article the discussion limited to discuss about the personality and behavioral differences only. The study conducted by Minnesota is to support the existence of an important genetic component in behavioral and personality differences. According to the author, the study has been done by MISTRA are biased toward the sample, based on Newman et al. and Shields studies, MISTRA twins were discovered on the basis of similarity and their knowledge of each other's existence. Also, Minnesota study also lack of case histories and the failure to share data. The reports of Newman et al., Shields, and Juel-Nielsen contained hundreds of pages of detailed case histories of twins, which helped independent observers to draw their own conclusions from the data. Although most of the earlier researchers were viewing twins through a hereditary lens, their descriptions provided a wealth of information. In this study, they are used several type of method, one of the technique is used two or more test instrument to ensure the adequate coverage, for example the participants were given a battery of personality and mental ability tests, interest and value inventories...
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...It could be exciting to There are different types of twins that occur in not only to humans but to a variety of different types of mammals, they are either dizygotic or monozygotic. In the case of conjoined twins, they are monozygotic, or identical, and the highest incident is in humans (Kaufman, 2004). It occurs two weeks after fertilization or at the primitive streak stage where the twins get attached to one another. Conjoined twins have a common placenta, an amniotic as well as chorionic sac (National Library of Medicine, 2006). The attachment could happen in different parts of the body and the twins could share several organs. Having conjoined twins is uncommon and happens in one in 200,000 births; furthermore, their survival rate ranges...
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...Who and what are conjoined twins? “Conjoined twins are two babies that are born physically connected to each other,”(Mayo Clinic Staff,1). Some conjoined twins are Chang and Eng, Violet and Daisy, and Brittany and Abby. There are many different kinds of conjoined twins. Conjoined twins will never be alone. How will they live their lives? Well conjoined twins Chang and Eng figured out how to live their lives with each other and now may not be able to survive without each other. Chang and Eng seemed like perfectly normal healthy twin boys, but when their mom, Nok went to wash them when they were born, they seemed to be connected by a ligament. When they got a little older to children they would hug each other wrapping their arms around...
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...“Are you guys twins?” “How does it feel to have a twin” “Can you read Each other’s minds?” Questions a twin is used to hearing daily. Who wants to talk about being a twin all day? No one . For decades twins have been stereotyped. Society is so fascinated by twins due to them have being so rare “only about two percent of births resulted in twins just a couple of decades ago (OSDELL)”. Although people may have created an image of twins and how they're “supposed to be” they are mistaken in some ways. “Twins are always best friends and soulmates (Osdell)” . Twins are expected to be bestfriends due to always being around each other and being each other's closest allies. But this is most times than not, not true. Not all twins are as close as people...
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...vs. Nurture in Twins Stephanie A Anderson Western Governors University WGU Student ID# 000257288 Nature vs. Nurture in Twins Many studies are being done on twins and the difference between genetics vs. environment. Many studies are done on monozygotic twins as well as dizygotic twins. Monozygotic (MZ) twins are known as identical twins because they are from one egg that is fertilized and splits into two genetically identical halves, which continue to grow as twins. If there are any additional splitting of the zygote it leads to triplets, quadruplets etc. In Dizygotic (DZ) twins, also known as fraternal twins, there are two eggs that are fertilized by two different sperm, essentially making two babies at once that are genetically different but similar like other siblings. (Wheelwright, 2004) There are many differences between identical twins and fraternal twins such as fraternal twins can be of opposite sex. It is very rare for identical twins to be different sexes since they are split from the same zygote. (Wheelwright, 2004) Identical twins share 100% of their genetics and fraternal twins about 50%. (Horwitz, Videon, Schmitz, Davis, 2003) Identical twins do have the same DNA and the same fingerprints. Although there are now genetic tests that can find minor differences in the DNA of identical twins, they are still considered genetically identical. (Wheelwright, 2004) With all the studies that have been done over the years with sets of twins, they are beginning...
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...Heroism in the Twin Towers | | | 1) One reason as to why some people act heroically in emergencies while others do not is based on the fact that heroic people possess positive morals and traits (Johnson, 2012). Furthermore, those people that possess positive morals and traits make good choices and will respond to a situation immediately (Johnson, 2012). In the case study, Heroism in the Twin Towers, the rescuers displayed positive morals and traits by using crowbars to break through drywall and opening stairway doors in order to reach out and help the victims escape being fully aware that at any given moment they could have injured themselves in the process (Johnson, 2012). Another reason as to why some people act heroically in emergencies while others do not is based on the fact that heroic people have a high moral identity where moral principles and character traits are the core of their being (Johnson, 2012). Furthermore, people with a high moral identity have a positive approach to life as well as a strong desire to do the right thing demonstrating will power and integrity to help others in need (Johnson, 2012). In the case study, Heroism in the Twin Towers, the rescuers displayed the most notable case of a high moral identity as they were willing to sacrifice their life so that the victims can live (Johnson, 2012). 2) The type of characteristic traits that the rescuers demonstrated in rescuing the victims from the Twin Tower attacks were courage, determination...
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...Research Paper: Does Twin Language as child effect language later Chloe Wilborn B00745993 October 4, 2013 Introduction To me personally Twins is an interesting topic because I have a twin sister. Although we are not identical, we are so much alike. Language and communication are also important because they are the foundation of a society. A society must have credible and solid language. I wanted to research the communication between twins, because I wanted to know if being so close to one person effected their communications with others. Does the bond that twins have restrict them from closely communicating with someone that is not their twin? It’s suggested that growing up all twins have a twin language that they use to only talk to one another and no one else can understand it. I also wanted to know if that language between the twins ultimately would cause problems in language later for them. My sister and I did have a twin language and I also wanted to know if that could have had an effect on us. Article Summaries Thorpe, K. (2006). Twin children's language development. Early Human Development, 82(6), 387-395. doi:10.1016/j.earlhumdev.2006.03.012 The purpose of this experiment was to study the delay in language in comparison between twins and single born children. On average, twins have scored lower than single born children on range of tests of verbal understanding. This was especially true in male twins though. Thorpe (2006) used twins from 20 months to 11 years...
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...Exploring Twins; towards a Social Analysis of Twinship. STEWART, Elizabeth A.. EXPLORING TWINS; Towards a Social Analysis of Twinship. New York, NY: Global Publishing at St. Martin's Press, 2003, 221 pp., $26.95 softcover. This extremely dense and turgid book, written by a sociologist who gave birth to twins herself, is rich with metaphor and literary and biblical allusion. The author exams myths and explanations of twinning throughout time and across world cultures. She also looks at why there are so many persistent myths around twins and sees these myths as a way of explaining twinning. While some cultures see twinning in positive terms [divinity, fertility], many see the phenomenon in negative terms [infanticide of one or both twins, death of the mother, banishment of the family, exposure of the twins, starvation of one or both twins, death to girls and life to boy twins]. Stewart also discusses the importance of support groups, such as MELD, to help parents strategize and cope with raising multiples. Interestingly, the Yoruba of Nigeria have the highest twinning rates in the world. Stewart spends a lot of time noting the occurrence of twins in literature, from Shakespeare, Rogers and Hart, Mark Twain, and Alice in Wonderland. They also appear prominently in films such as The Dark Mirror, The Parent Trap, Dead Ringers and Twins. She points out that twins research is often used to deduce the impact of nature vs. nurture, the extent to which the environment plays...
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...Twins Photo: Twins A Thing or Two About Twins They have the same piercing eyes. The same color hair. One may be shy, while the other loves meeting new people. Discovering why identical twins differ—despite having the same DNA—could reveal a great deal about all of us. By Peter Miller Photograph by Martin Schoeller Every summer, on the first weekend in August, thousands of twins converge on Twinsburg, Ohio, a small town southeast of Cleveland named by identical twin brothers nearly two centuries ago. They come, two by two, for the Twins Days Festival, a three-day marathon of picnics, talent shows, and look-alike contests that has grown into one of the world's largest gatherings of twins. Dave and Don Wolf of Fenton, Michigan, have been coming to the festival for years. Like most twins who attend, they enjoy spending time with each other. In fact, during the past 18 years, the 53-year-old truckers, whose identical beards reach down to their chests, have driven more than three million miles together, hauling everything from diapers to canned soup from places like Seattle, Washington, to Camden, New Jersey. While one sits at the wheel of their diesel Freightliner, the other snoozes in the bunk behind him. They listen to the same country gospel stations on satellite radio, share the same Tea Party gripes about big government, and munch on the same road diet of pepperoni, apples, and mild cheddar cheese. On their days off they go hunting or fishing together. It's a way...
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...LESSON FIVE & SIX – ALL YOU NEED TO KNOW ABOUT EATING DISORDERS ------------------------------------------------- Specification link: You will be able to outline and evaluate: ------------------------------------------------- Biological, including neural and evolutionary, explanations of anorexia nervosa ------------------------------------------------- Psychology explanations of anorexia nervosa Outline and description of theories | Research evidence and commentary | IntroductionThe DSM-IV Rev identifies three categories of eating disorder: * Anorexia nervosa 1. AN -restricting type – refusal to eat 2. AN- binge eating/purging type – episodes of binge eating followed by removal of food from the body by vomiting, laxatives, or enemas.Both of these are associated with significant weight loss and the other symptoms of AN. * Bulimia nervosa – episodes of binging followed by removal of food from the body by vomiting, laxatives, or enemas (no significant weight loss). * Eating disorders not otherwise specified (EDNOS)The four major symptoms of anorexia nervosa are: * The body weight is 85% or less of normal weight for age and height * Distorted perception of body weight/shape, and/or denial that the weight loss is severe * Intense fear of becoming fat * Loss of three consecutive menstrual cycles in women (amenorrhoea)Anorexia nervosa (AN) and Bulimia nervosa (BN) have much in common, particularly a dissatisfaction with body weight and/or shape....
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...Genetic Factors are those that we inherit through our parents, they are used to explain why aggression runs through families. Genetic factors play a role in aggressive behaviour and lies within an individual’s genetic make-up. Psychologists, look at twin studies to try and find evidence on a genetic basis to compare the degree of similarity of aggression between sets of monozygotic (MZ) twins and dizygotic (DZ) twins. A lot of the time, it is found that aggressive behaviour is more highly correlated in MZ twins than DZ twins. An example of this would be when McGuffin and Gottesman found a concordance rate of 87% for aggressive behaviour in MZ twins, compared with 72% for DZ twin pairs. However we cannot just rely on evidence from twin studies because they can be problematic as it is hard to disentangle nature and nurture. Many have suggested that MZ twins are treated more alike and share more similar environments than DZ twins because they act more like 'one' person rather than two separate people. This may affect how alike they are and how likely they are to express aggression. Researchers have also identified a number of genes that can potentially cause aggression. Although no individual gene for aggression has been identified in humans, a gene responsible for the production of the protein MAOA has been associated with aggressive behaviour. MAOA regulates the metabolism of serotonin in the brain. Low levels of serotonin have been associated with aggression. In 1993, a study...
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...her old flat without any way of communicating. But eventually after long time, she finds a way to get in touch with her nieces and her old lover, Robert. When Elspeth died, she left all of her belongings, including the flat, to her twin sister’s twin daughters, Julia and Valentina. This surprised everyone, as Elspeth and her sister, Edie, had not spoken with each other for twenty years. We later realize out that the twins switched identities, because when Edie, who actually was called Elspeth, was engaged to her husband, Jack, he started to be flirtatious towards Elspeth, who was Edie at the time. So they started to impersonate each other to test him. But even though Jack knew they had switched, he played along and fell in love with “Edie” and broke off the engagement with Elspeth and asked “Edie” to marry him. But in the meantime Elspeth had slept with Jack and was pregnant with the twins, so she moved in with him and raised the twins, though it was Edie he had married. When the twins were about four months old, they switched back and Edie came to live with Jack. But Elspeth was actually the real mother of Valentina and Julia. Valentina and Julia are identical twins, w ho are inseparable and do everything together. Julia is the more dominant twin and...
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