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Possible advantage of genetic test
Genetic testing biology
Genetic testing biology
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Genetic testing involves examining an individual’s DNA and identifying abnormalities within the chemical makeup of specific structures. It, essentially, maps the person’s genome and can be interpreted to predict future issues. By analyzing the chromosome, genes, and even certain proteins, physicians and researchers can find changes that lead to inheritable disorders. These changes can lead to possible diagnosis or cure for the disorder in question. In most cases, genetic testing is used to determine the probability that an individual will develop a certain disorder. It is not used to specifically diagnose a disorder, as there are no techniques that are 100% accurate. Genetic testing techniques do give good evidence to confirm a physician’s findings, but it is not the first act a physician takes to diagnose a disorder. It can narrow a search or rule out a specific disorder very confidently, but making a diagnosis based solely on genetic testing is not an action that a qualified medical professional would consider. There are many types of genetic tests that are administered to the adult population. The more commonly used genetic tests are paternity tests, genealogical tests, and forensic testing. They are quite self-explanatory; paternity tests are to determine relatedness of 2 subjects, genealogical tests are used to formulate a heritage or ancestry, and forensic testing is used to identify or rule out a person that has been charged with a crime. Other genetic tests include presymptomatic testing, used to determine the risk someone has to developing a genetic disorder, diagnostic screening, used to rule out or identify a suspected condition, and carrier screening, used to determine if an individual carries one copy of a gene mutati... ... middle of paper ... ...sts? Genetics Home Reference. Retrieved April 24, 2014, from http://ghr.nlm.nih.gov/handbook/testing/uses 2. NOVA. (2012). Cracking Your Genetic Code USA: Public Broadcasting Service. 3. Heart, Lung, and Blood Institute. (2012, September 28). What Are the Signs and Symptoms of Sickle Cell Anemia? NHLBI, NIH. Retrieved April 30, 2014, from https://www.nhlbi.nih.gov/health/health-topics/topics/sca/signs.html 4. Hamosh, A. (1999, June 13). OMIM Entry - # 603903 - SICKLE CELL ANEMIA. OMIM Entry - # 603903 - SICKLE CELL ANEMIA. Retrieved April 26, 2014, from http://www.omim.org/entry/603903?search=sickle%20cell%20anemia&highlight=cell%20anemia%20anaemia%20sickle 5. National Library of Medicine. (2014, April 28). What are the risks and limitations of genetic testing? Genetics Home Reference. Retrieved April 24, 2014, http://ghr.nlm.nih.gov/handbook/testing/riskslimitations
. DNA can be left or collected from the hair, saliva, blood, mucus, semen, urine, fecal matter, and even the bones. DNA analysis has been the most recent technique employed by the forensic science community to identify a suspect or victim since the use of fingerprinting. Moreover, since the introduction of this new technique it has been a large number of individuals released or convicted of crimes based on DNA left at the crime sceneDNA is the abbreviation for deoxyribonucleic acid. DNA is the genetic material found in cells of all living organisms. Human beings contain approximately one trillion cells (Aronson 9). DNA is a long strand in the shape of a double helix made up of small building blocks (Riley). There are four types of building
In Gattaca, the plot focuses on the ethics, the risks, and the emotional impact of genetic testing in the nearby future. The film was released in the 90s; yet in the present, the film does not give the impression of science fiction. Today, genetic testing is prevalent in many aspects of the scientific community. This paper will describe genetic testing, its purpose, diagnostic techniques that use genetic testing, relating Huntington’s disease to genetic testing, and the pros and cons of genetic testing.
Having an inherited disease like sickle cell anemia takes a life-long of treatments and preventions of complications that comes with being diagnosed with sickle cell anemia. Many people have lived a long time while dealing with the disease because of the on-going care being provided to keep patients as healthy as possible. Knowing that both male and female have the sickle cell trait can prevent having a child with the sickle cell disease. From the help of the parents, doctors and medicine, sickle cell patients don’t have to deal with the pressure of living with a life threatening disease.
States. The FBI performs testing for free to all police agencies to help keep costs down
Sickle-cell anemia is a genetic disorder that makes your body produce red blood cells that are abnormal in shape. This disease is also widely known as hemoglobin SS disease. Unlike normal red blood cells, sickle cells are rigid and tenacious. Due to their shape and rigidness, they can block blood flow. In turn, this could cause organ damage to the body. Sickle cells are also fragile and die very easily due to the fact sickle cells have a lifespan of twenty days instead of the normal one hundred and twenty days for normal red blood cells.This causes the body to have a lower blood cell count, hence the name anemia in sickle cell anemia.
Sickle cell anemia is a blood disorder that affects hemoglobin (pronounced: hee-muh-glow-bin), a protein found in red blood cells that helps carry oxygen throughout the body.
"Symptoms and Diagnosis of Heart Attack." American Heart Association Symptoms and Diagnosis of Heart Attack. American Heart Association, 22 Mar. 2013. Web. 29 Mar. 2014.
Sickle cell anemia is an inherited disease in mostly people of Mediterranean, African, or Southeast Asian heritage which occurs when a person inherits the genes for sickle hemoglobin(NHLB). Sickle cell anemia is named from the shape that the red blood cells take because they become a crescent/sickle shape. Normally these red blood cells are flexible and round, but with sickle cell anemia they become rigid and sticky(Mayo Clinic) This shape inhibits the normal functions of red blood cells and they also cause blockages in blood flow to the limbs. The signs and symptoms of the disease vary, ranging from mild symptoms to drastic and hospital inducing health problems. There currently exists no widely available cure for sickle cell anemia, but as time passes and more research is done it is hopeful that there will be a cure.
When it comes to genetic diseases and conditions, testing can be very helpful and serve a good purpose. People with diseases that are inheritable to their children are encouraged to be tested. For example, in the article about Jewish testing, it says
First, let's consider the situations in which genetic testing would be beneficial to patients. Genetic testing for diseases that are preventable or treatable could allow individuals to alter their lifestyles so as to treat the disease or reduce their risk of developing the disease. For instance, the E2 version of the APOE gene, which is found on chromosome 19, has been linked to heart disease (Ridley, 1999). Individuals who have two copies of the E2 gene are particularly sensitive to high-fat and high-cholesterol diets. Therefore, a genetic test to determine whether a person has the high-risk version of the APOE gene could inform a person of future health risks, thereby allowing the person to change his diet to help prev...
Before we start discussing how genetic tests are developed, let us discuss how genes can trigger disease. A sound body requires the action of many proteins working together. For a protein to function properly, an intact gene must encode for that specific protein. A mutation describes a gene which has been changed. The most common type of mutation is a single change of a nucleotide of DNA. Other types of mutations include the loss or gain of a nucleotide and the disappearance or multiplication of long segments of DNA. Mutations can have three effects: beneficial, harmful, or neutral. Mutations are beneficial if the fitness of an individual is enhanced. Harmful mutations can either slightly alter a protein, where the protein may still minimally function, or they may totally disable a protein. In this instance, the outcome is not only based on how a mutation alters a protein’s function, but on how important the protein is to the body (Understanding Gene Testing).
According to the Centers for Disease Control and Prevention (CDC), sickle cell disease (SCD) affects millions of people worldwide and predominantly affects descendants from sub-Saharan Africa, South and Central America, the Caribbean, Saudi Arabia, India; and the Mediterranean. Sickle cell disease is a genetic disorder of the red blood cells where the red blood cells comprises of predominantly hemoglobin S, an abnormal type of hemoglobin (2011). Two most common types of sickle cell disease seen in the clinical setting are Sickle Cell Anemia (SS) and Sickle-Hemoglobin C Disease (SC) (Sickle Cell Disease Association of America, 2014, para.1).
Genetic screening techniques are coming of age and the controversy that surrounds them is growing by the minute. The definition of genetic screenings is as follows: a systematic search for persons with a specific genotype. These tests that look into the essence of humanity, will allow scientist and physicians the opportunity and ability to alter the human genotype for better or worse. Genetic advancements will bring controversy at every milestone. Genetic Screening usually takes place when an individu al or group shows risk for a disease or trait. Genetic testing can pinpoint a specific allelic interaction or multiple gene interactions, which may lead to a disorder. The common thread of life is DNA and DNA is the only major requirement for genetic sc reening. With knowledge of structure and function of DNA scientists can unlock the mysteries of life.
The "Genetic Screening" Genetic Screening. NDSU,. Web. The Web. The Web.
Coughlin, S. S. (2002). Future challenges for research on diagnostic tests: genetic tests and disease prevention. Journal of Epidemiology & Community Health, 56(5), 335-336. doi:10.1136/jech.56.5.335