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Genetic Mapping & Testing

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Want to know what your genes say about you? The human genome is perhaps the greatest feat of human exploration in that it explored the map of human body rather than the map of earth or space. We finally had nature's complete genetic blueprint for building a human being. All data from Human Genome Project was made openly available on the internet which hastened medical discoveries all around the world. It caused a biotechnical revolution with America at the forefront. In April 2003, researchers completed the Human Genome Project, under budget and more than two years ahead of schedule.

There are new breakthrough technologies allowing scientists to look at more of the genetic map

The Human Genome Project has already helped make the discovery of more than 1,800 disease genes. It has allowed for many incredible medical advances and discoveries such as Pharmacogenomics. Pharmacogenomics looks at how genetics can affect someone's response to a drug for example tests can identify whether or not a breast cancer or AIDS patient will respond to the certain drugs or what the correct dose of the blood-thinner Warfarin for a heart patient should be. Genetic mapping, also called linkage mapping, can show inherited disorders such as muscular dystrophy and cystic fibrosis and can help find which chromosome contains the gene and precisely where the gene lies on that chromosome.

Newborn screening and breast cancer gene tests are among several genetics tests currently administered by experts. Mapping can also help scientists find links to common disorders such as asthma, heart disease, diabetes, cancer, and psychiatric conditions however gene mapping usually provides information on whether someone is susceptible to certain conditions only. It can take other factors such as environmental conditions for the disease to develop. It cannot always be confidently predicted that someone will develop a disease based solely on a genetic test, only that you may be a carrier of a certain mutated gene.

There are new breakthrough technologies allowing scientists to look at more of the genetic map however and this may allow a more personalized medicine approach for patients including better surveillance of certain diseases, drug therapy and prevention surgery and better management of diseases in particular for groups of high risk patients. A genealogical DNA test looks at a person's genome at specific locations of the genome map and shows information on that person’s ancestry 100s of 1000s of years from the past. Are you African, Viking, Norman or Saxon ancestry? This test is different to the test performed to find a person’s propensity for an illness. This test looks at different parts of the map to get this information. Genealogy tests also combine DNA testing with genealogical and historical records from databases and compare and test for matches.

Your ancestry can not be told from DNA alone. There are three main types of genetic ancestry test:

  • A Y-chromosome DNA (Y-DNA) test – Tests the male line in the family 
  • A mitochondrial DNA test – Tests the female line only
  • An autosomal DNA test - This test provides information from the great majority of your DNA.

The Genetic Screening and DNA Tests at Home:-

Although full genome sequencing is not far away, it remains unaffordable for most. Testing your DNA can now be done in the comfort of your home and includes paternity tests, relationship tests, gender prediction and ancestry tests with just a simple swab to the cheeks and then it sent to the laboratory for the results. These results are produced in as little as two days.

It is important to choose a reliable DNA test provider that uses state of the art technology, especially if you are needing a test to be admissible in court or used as proof in a chain of custody legal case. There are many reasons to use genetic mapping and genealogy tests but whatever they may be, the fact that they are so easily accessible now is nothing short of incredible.

Genetic Mapping & Testing

Genetic mapping (or linkage mapping) shows diseases that can be passed on from parent to child through one or more genes. There is a lot of information out there about tests and what various ones can offer. Here are some more resources for you to find our more information about genes and the role they play in such conditions as diabetes, cancer, asthma, heart disease, and psychiatric conditions.

Should you get your genome mapped? U.S. News www.health.usnews.com

What is the future of genome mapping? American Cancer Society www.cancer.org

Genetic Testing Registry www.ncbi.nlm.nih.gov