Science - 947 Words

DNA Technology Task 3 – Poster DNA fingerprinting, also known as DNA profiling, is a technique used in forensic science that identifies individuals based on various characteristics of their DNA. Although the DNA sequences between humans are 99.9% identical, DNA fingerprinting is able to distinguish between individuals due to the presence of specific sequences within the non-coding region of the genome known as satellite DNA. This satellite DNA consists of long stretches of DNA made up of repeating base sequences known as short tandem repeats (STR). These STRs considerably vary in length between individuals, particularly between unrelated individuals, allowing exact individuals to be identified. One major use of DNA fingerprinting is in†¦show more content†¦Due to the presence of negatively charged phosphate groups within the sugar-phosphate backbone of DNA, the DNA fragments diffuse through the gel towards the anode. The smaller fragments are more able to penetrate through the gel and thus travel the furt hest whereas the larger fragments travel a shorter distance. The exact size in bases for each separated fragment in a given sample of DNA can be determined by comparing each fragment against standard fragments of known length. This is commonly known as a ladder within the laboratory. For the purposes of a crime scene investigation, multiple DNA samples would be simultaneously run through the gel, Once separated, a DNA fragmentation pattern is produced that allows the criminal to be identified. As shown in the figure below, a DNA sample obtained from the crime scene is compared to two possible suspects. The pattern of suspect 1 more closely matches the pattern of the DNA obtained from the crime scene thus allowing the true criminal to be correctly identified. Similarly, for paternal testing, the DNA samples of the mother and child are compared to the potential fathers. The fragmentation pattern of the child should resemble both the mother and true father as half of child’s all eles are inherited from the mother and father. Male 1 resembled the child’sShow MoreRelatedThe Science Of Science Or Forensic Science947 Words   |  4 Pagessecrets. There are various categories of science, each with extensive scientific knowledge, and the use of the scientific method. People can only become true scientists after attending college, gaining knowledge about a certain field and it’s previous scientists, learning from them, and implementing the Scientific Method in the work that they do. Foremost, to become a scientist, going to college is a must. A bachelor s degree in natural science or forensic science is mandatory for engaging in this fieldRead MoreScience And Its Impact On Science911 Words   |  4 PagesWhile science serves as a trustworthy means, humans have disrespected it as an insufficient end. The results produced by scientific experiments are legitimate to a particular population, in a particular environment, at a particular time. The results of such do not substantiate claims or assertions of the broadest category of â€Å"human nature†. Science may lead us to conclude a correlation of human behavior, but to claim a causation would be vastly outside the testable scope of science. Godfrey-SmithRead MoreThe Philosophy Of Science And Science1030 Words   |  5 Pagesthis class began, I thought of myself as a person who tended to lean towards science as fact-based and found it hard to believe in some philosophical and religious claims that were not backed up by experimentation and evidence. Five weeks later, my views haven’t changed drastically, but have instead been developed and broadened. I now understand the importance of the philosophy of science and why philosophy and science should be interconnected. The need to question things that may appear to be factualRead MoreThe Scientific Science Of Science1304 Words   |  6 PagesWe discover scientific knowledge in various natural science fields such as biology or chemistry. A common misconception about the natural sciences is that both the knowledge they reveal to us and the scientific method used in discovering this are purely analytical. This means that these sciences are rigid in facts and do not contain any subjectivity or creativity. However, the scientific method is not a rigid system of pursuing measurable facts. It contains fallacies and biases. In testing hypothesesRead MoreScience And Technology : Science862 Words   |  4 PagesScience and Technology Science and technology are two very different, but two very similar things. Technology and science are both advancing at a very rapid speeds, which means everyday they rely on each other more and more. Science and technology are in deed interdependent. Science is used in technology, and technology is used in science. Both are important to our society today, and together, they have affected people’s lives all over the world. Science is the knowledge or the study of the naturalRead MoreThe Objectivity Of Science And Science847 Words   |  4 PagesThe objectivity of science would be contingent on our trust in the scientists who are feeding us knowledge. We often believe these scientists, but is there actually a reason for us to trust what they are passing on to us? What would science be if they had not been telling the truth? There is no denying the existence of public trust in the words of scientists, but it should be noted that everything that we understand as scientific fact today would be in question if we lost trust in our scientistsRead MoreThe Science Of Science Education1728 Words   |  7 Pageseducation. Specifically when looking at modern science education. The science education of today has various problems such as killing the curiosity of students, which leads to science becoming this rigid field of study that does not allow for excitement, understanding, or the ability to question the sci ence authorities. These problems in science education lead to long term problems of not creating forward thinkers who are committed to driving science for the sake of scientific curiosity as opposedRead MoreScience, Non Science And Pseudo Science1889 Words   |  8 PagesWhat is Science? When it comes to the word ‘science’ most of the people have some kind of knowledge about science or when they think of it there is some kind of image related to it, a theory, scientific words or scientific research (Beyond Conservation, n.d.). Many different sorts of ideas float into an individual’s mind. Every individual has a different perception about science and how he/she perceives it. It illustrates that each person can identify science in some form. It indicates that theRead MoreScience And Its Impact On Science Essay1755 Words   |  8 PagesScience is an ordered study of the global facts that involves keen observation, analyses and the use of experiment to certify th e researched facts. Science can also be defined as the orderly wits that are obtained through observation and even through the research and experiments. In the field of philosophy, science is defined as the approach or the methodology used to test the philosophical hypothesized statements about nature and other related matters of life. Science interacts differently withRead MoreThe Contributions Of Science And Science3124 Words   |  13 Pagesobserving the timeline of modern science, and all the abridgments made to it over the past few centuries, one cannot help but ponder upon the course that science took to reach what it is today. We are aware of the pioneers of science such as Newton, Lavoisier, Stahl, Joule, Maxwell, Einstein etc, and all of the groundbreaking contributions these extraordinary individuals made to mould science into what we today know it to be. Over the course of History of Science, we have examined the various factors