What do you understand by the term “Lancefield groups”? History In the early 1930’s Rebecca Lancefield recognized the importance of serological tests for the identification of organisms. The system is based on specific antibody agglutination reactions with cell wall carbohydrate antigens (C polysaccharides) extracted from the streptococci. Lancefield also showed that further sub division of group A into specific serological types was possible using type-specific M (protein) antigens. The groups
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results in fixation (or loss) of alleles by purely random processes. The topic is thoroughly covered in all the major textbooks—it is not controversial. Unless you deny the existence of random genetic drift‚ you must agree that some of evolution is entirely due to chance events. The controversy is over how much of evolution is due to drift and how much is due to natural selection. Excellent arguments have been advanced to prove that most of evolution is due to random genetic drift and that’s the position
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Webster defines an abortion as a medical procedure used to end a pregnancy and cause the death of the fetus. Just reading these definitions begin the argument of whether or not abortion should be legal and if it is “morally” right. Abortion has become a popular topic of discussion across politics and within churches. Although both sides have valid arguments‚ it is up to the woman carrying the child to decide whether she will keep the child or not. No government‚ nor religion should force someone into
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“Argument in Favor” Haseena Khan BS 3rd year Departmen of English Submitted to: Ma’am Fehmina Naz Submitted on: 19th September 2011 Argument in Favor of Oedipus’ Fate Play: Oedipus Rex Writter: Sophocles No one can deny freewill of a person totally‚ so as fate. But as I m in favor of Oedipus‚ the protagonist of ancient Greek play “Oedipus Rex” by Sophocles. I think here in it‚ fate is more responsible for Oedipus’ end. Many questions were raised against Oedipus in class argument about
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Argument/Documented Essay 905 words Calling all Cell Phones Has it happened to you that sometimes you go out‚ but forgot your cell phone at home‚ and you don’t feel complete? There’s a feeling somewhere inside that you’re missing something‚ a sense of insecurity prevails… welcome to the world of cell phone addiction! Cell phones are having a great influence in our lives‚ and are very convenient to keep with us. Cell phones are a faster and more effective way to transfer information. Indeed
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for Knowledge: An Argument against the Rising College Tuition Deciding which college to attend is a choice that many high school graduates will face. Whether it is in state or out of state‚ the variety of colleges is endless‚ but essentially the high cost of attending these institutions significantly cuts the choices down to a minimum. Should rising college tuitions limit the choices for students? No‚ absolutely not. College tuition should be regulated to give fair chances to all students to enable
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there is a certain belief against children playing football. The belief is that there is no reason why children should be playing this sport‚ specifically with the research about how it can lead to different types of injuries. Even though this is a valid view‚ this is a view that I am against for a few different reasons. One of these reasons is because children can still learn lessons from playing sports like football that cannot be taught anywhere else. I am also against this belief because there
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What are the arguments for and against an elected second chamber. Since the 1990’s there have been many demands for a reformed House of Lords from political parties such as the Liberal Democrats. It has therefore been considered by all three main political parties to incorporate elections to the appointment of Lords as a possible reform. However it could be taken from view point that an elected second chamber will decrease the representation of people because of partisanship and limit Parliaments
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The debate of plastic against paper traces back in time and is still considered as an ongoing argument. To give my opinion on it I was provided with four sources that share the purpose of comparing which product is more harmful. The first source which is a graph called “Annual Carbon Footprint Performance (Comparative)”‚ shows that paper is giving off a huge amount of carbon dioxide compared to other resources. The second source which is an article by the website Clean by Design called “ Fiber Selection:
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skin tight “muscle shirt.” This situation happens too often in schools all over. The discrimination in this situation may seem obvious‚ but some might deem this as an appropriate and fair incident‚ where the female was rightfully punished for her inappropriate clothing. Situations like the before example‚ are often backed up by school dress codes‚ a code in which certain articles of clothing are regulated. Dress codes are in all schools‚ including private and public‚ middle and high schools; however
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