11 Mart 2008 Salı

Our Dreams Are Our DNA

Take biology for instance. I never took a biology course in my life. I really have no idea how my body works, and yet I remain in good health. But when I visit the doctor, it’s the same as visiting an auto mechanic or a computer technician. They ask a few questions, and then tell me it sounds like a problem with the gobbly-gook. I nod my head, as if I know what they’re talking about, and then leave more confused then ever.
So, you could imagine my horror when my son comes up to me and says, “Daddy, what’s DNA?” I had no clue. The only people that really care about it are the lawyers, the researchers and the people on CSI. I figured it had to stand for something, and I knew two things about it from watching television: it’s all over our body, and it’s unique for every body.
So, I gave him my “Daddy knows best” look and said, “Eric, it’s an abbreviation. It stands for…Dreams Needing Attention.” His face lit up and he went to the phone to tell all his friends about his new found knowledge. Then my wife came up, and said, “Hold on Eric. I decided to Ask Jeeves, and he said DNA stands for Deoxyribo Nucleic Acid.” Silly Jeeves. So, I told my son that was the Latin equivalent for Dreams Needing Attention.
But if you think about it, my answer made perfect sense. Our dreams are our DNA. DNA is all over our body, and it makes us unique. So do our dreams!
My feet have dreams to run with Olympic speed. My hands have dreams to write another best-seller…or two. My eyes have dreams of seeing a summer without any road construction! And our hearts have dreams. Why else would the Internet become the world’s largest dating service?
Sure, some of us share similar dreams. Other people also want to write a few best-sellers. But, when we look at the big set of our career dreams, our relationship dreams, our fun dreams and our other dreams, we are each unique in that large set of dreams.
So, DNA is all over our body, and it makes us unique. The thing is that when we’re young, we have huge dreams. We want to cook like Martha Stewart, even if we don’t know how to turn on the oven. The gap between our reality and our dreams is huge. As we grow older, we should be closing the gap to make these huge dreams come true. But instead, we pay attention to the dreams that are much closer to reality.
Our big dreams haven’t gone away, we’re just not paying attention to them. They’re still in our feet, our hands, our eyes and our hearts.
Adults don’t seem to think dreams come true, but they do. Dreams come true everyday. When you get up in the morning, you dream about getting to work on time. (For some this is a bigger dream than for others) At the beginning of the year, your sales manager will present a sales dream for the year. (sure, he might call it a target, or a goal, or an objective) Then the sales team works to make that sales dream a reality.
On a smaller scale, each day, you go about spending your time and money trying to make your dreams come true. The dreams you focus on will create your reality. If you’re focusing on sales of one mil.lion per year, you’ll probably get different results than if you’re focusing on sales of ten mil.lion per year.
To change your reality, change the dreams that you’re paying attention to.
If you pay attention to the dream of making it through the day, then that will be your reality. If you pay attention to the dream of becoming the person your DNA wants you to be, then your reality will go in a whole new direction.
We’re not put on this planet to settle. We’re put here to shine.
Your reality in the upcoming weeks, months and years will depend on the dreams you pay attention to today. Ask yourself what reality you want for yourself, then pay attention to the dreams that will get you there!

DNA Genealogy

The next time you are watching your favorite CSI TV show or a particular movie and stumble into the fascinating world of DNA, you might be surprised to know that our DNA can do more than identify a suspect or victim at a crime scene. In fact, DNA is now being used to identify ancestors in the new and exciting field of DNA Genealogy.
DNA Genealogy takes traditional genealogy and applies genetics to it. DNA Genealogy involves the use of genealogical DNA testing to determine the level of genetic relationship between two individuals (Genealogical 2005). DNA, deoxyribonucleic acid, is used in the process because of its unique nature and the fact that it is passed down from one generation to the next. In the passing, some parts of the DNA remain almost completely unchanged, while other parts change dramatically. This property allows for the identification of certain consistencies between generations and provides the ability to identify genetic relationships.
There are two types of DNA tests available for testing DNA Genealogy: Mitochondrial DNA (mtDNA) and Y-chromosome DNA tests.
Mitochondrial DNA (mtDNA) is found in the cytoplasm of the cell instead of in the nucleus as is Y-chromosome (Tracing 2003). mtDNA is passed by a mother to both her male and female children without any additions or mixing from the father. Therefore, your mtDNA is the same as your mother’s mtDNA. mtDNA is different in nature compared to Y-DNA. It changes slowly making it more difficult to determine close relationships and easier to determine relatedness. If two people have the same mtDNA, there is a very good chance that they also share a common maternal ancestor. Unfortunately, it is difficult to determine if that common maternal ancestor was recent or instead lived hundreds of years ago.
Y-chromosome tests have been used more and more recently to determine DNA Genealogy. The Y-DNA tests are only available for males, because the Y-chromosome is only passed down along the paternal line from father to son. There are tiny chemical markers on the Y-chromosome that create a unique pattern. This pattern of markers is what is called a haplotype. A haplotype is used to determine one male lineage from another. This type of testing is often used to determine if two individuals who have the same surname share a common ancestor.
One of the early beginnings of DNA Genealogy was a study published by Bryan Sykes in 2000 (Sykes and Irven 2000) that used DNA Genealogy (Y-chromosome markers) along with surname studies to determine relatedness. The study compared 48 men with the same surname of Sykes from the regions of England and analyzed four Short Tandem Repeats (STRs) on their Y-chromosome: DYS19, DYS390, DYS391, and DYS393. The study found that of the 48 men tested, 21 had the same core haplotype and many others were only one mutational step away from the core haplotype. Skypes interpreted these results to reveal a common origin from an ancestor who lived some 700 years ago (Butler 2005).
Since its early beginnings, DNA Genealogy has come a long way and has grown rapidly. DNA Genealogy continues to increase in popularity as the price of tests becomes much more affordable and the number of markers and clarity of the tests become greater. Additionally, DNA collection techniques make it a very simple and pain-free process.
Sources
Butler J. (2005) Forensic DNA Typing; Biology, Technology, and Genetics of STR Markers, 74, 231-232.
Genealogical DNA test. (2005, December 7). Wikipedia, The Free Encyclopedia. Retrieved 21:52, December 8, 2005 from http://en.wikipedia.org/w/index.php?title=Genealogical_DNA_test&oldid=30489865.
Sykes, B. and Irven, C. (2000) American Journal of Human Genetics, 66, 1417-1419.

How Does My DNA Work?

The subject of DNA is very much in the headlines and news but very few have bothered to learn or understand just how this amazing molecule works and how it makes us what we are from head to toe. Haven't you ever asked yourself how you got your nose, eyes, ears, fingers, toes, and everything else? How did your DNA bring all this about? Before we answer that question we need to know just a few simple things about DNA.
DNA is the abbreviated name for the genetic code and it is exactly that - a code. It is a molecular string of chemical information.
DNA is located in the nucleus of our cells and is made up of smaller molecules called nucleic acids. These smaller molecules in DNA are arranged in a sequence, just like the letters in a sentence. The sequence of these nucleic acids tell the cells in our body how to build our nose, eyes, hands, feet, and everything else.
The material our body uses to build new cells comes from the food we eat. Food is not just for energy. Food is also the "lumber" and "bricks" the body uses to build new cells. When a cell multiplies it makes more cells of the same size. The only way to do this is by getting new material and that new material comes from food.
Think about it! When we were in our mother's womb we started off as a single cell not even weighing an ounce at conception. Eventually we developed arms, hands, legs, feet and organs such as brain, heart, lungs, liver, stomach, until we had a complete body. It's true that the single cell we once were multiplied into many more cells, but where did the material come from for that one cell to multiply into billions of more cells of equal size and eventually making a body weighing several pounds from something that didn't even weigh an ounce in the beginning. The material came from our mother's food.
When food is digested and broken down to its basic amino acids the various amino acids are then rearranged in a certain sequence to form cells that make up the various tissues and organs. What sequence these amino acids come together in is determined by the sequence of the molecules in DNA.
Remember, even after all our organs are formed the cells that make up our organs are continually dying and need to be replaced. Again, the material to make more cells to replace the ones that are dying comes from food.
Thus, when you feed your dog a T-Bone steak your dog's DNA will make sure that steak is digested and rearranged to form the various parts of your dog, but when you eat the same steak your DNA will make sure that the steak is digested and rearranged to form human parts.
The sequence in DNA differs from individual to individual and from species to species. For an analogy think of a library where all the books are in one language. In the library there are different books on different topics and subjects. All the books share the letters from the same alphabet, but the sequence in which these letters are arranged are different from book to book. The sequence of the letters makes the difference between a book on chemistry and a romance novel!
When scientists study genes they are studying segments of the DNA molecule. The goal of the human genome project was to locate where the various genes are on the DNA. Only in this way can we begin to understand how to use genetic engineering to correct various genetically caused disorders and maladies. Faulty genes arise from mutations. Mutations are accidental changes in the sequence of the genetic code caused by radiation and other environmental forces. Most biological variations, however, are not from mutations but from new combinations of already existing genes.
Because they are accidents in the genetic code, almost all mutations are harmful. Even if a good mutation does occur for every good one there would be hundreds of harmful ones with the net effect over time being harmful, if not lethal, to the species as a whole.
Evolutionists hope that with enough time and with enough mutations new genes for entirely new traits will be produced leading to the evolution of new biological kinds. There is no evidence that this can happen from accidental changes in the sequence of the genetic code, anymore than it's possible to change a romance novel into a book on chemistry by accidental changes in the sequence of the letters.
At the very best mutations can only produce new varieties of already existing genes or traits, but not new genes or new traits. For example, mutations in the gene for human hair may change that gene so that another type of human hair develops but the mutations won't change the gene so that feathers or wings develop!
No one has shown that DNA can come into existence by chance! It takes DNA to get DNA! Yes, the individual molecules that make up DNA have been shown to be able to come into existence by chance. But, it has never been shown that those individual molecules can come together into a sequence by chance to form the genetic code.
Science cannot prove the existence of God but the scientific evidence shows that DNA, life, and the universe are not here by chance. For more information on this please read my other articles and, especially, my essay "The Natural Limits of Evolution" at my website www.religionscience.com.
Sincerely, Babu G. Ranganathan (B.A. Bible/Biology)

DNA Takes Over Where Paper Leaves Off

Paper documentation only goes back so far but the genealogy bug knows no bounds. If we traced our family tree back fifty generations, we would always be curious about the fifty first. Knowing that the paper trail has to end somewhere, the only real alternative we have is our DNA. Each person carries a map inside of their cells, a map that shows where your family came from on Earth. Through a series of markers, geneticists can tell the path your family has taken over time. Although the information is somewhat vague, DNA is an excellent way to prove your ethnicity. DNA testing is somewhat expensive, around $100 for a simple test, but it can pinpoint a few key items. Men can determine where their male ancestors were from through a marker passed from father to son. Men can also determine where their female ancestors came from through a marker passed from a mother to her children. However, women do not have this marker from their father. This is one of the main confusions with DNA testing for genealogy purposes. A man's markers can tell where the Jones family came from because each father and son was a Jones. Women have the disadvantage of losing their last name when they get married. Mrs. Jones' mother was a Smith and her mother was a Williams, etc. We cannot say that any of these last names came from a specific area because they keep changing through marriage. It is therefore necessary that a man take a DNA test to prove the origin of the family's last name. Genetic testing can help solidify family ties when no paper documentation exists. For example, there are lots of Lett families around the country and we did not know how they all fit together, at least not until DNA testing came around. After having one Lett male from each line tested, we could see whose DNA matched and whose did not. We were able to see migratory patterns in the family where paper did not exist. It also helped us to separate out various spellings. There used to be confusion over which families in old documents were Letts and which were Lotts, an unrelated group. Now we have a better idea of where those families lived and who were their members. We have a much lower risk now of confusing Letts and Lotts.

10 Mart 2008 Pazartesi

Secret DNA Test - 5 Steps To Know Before You Start DNA Testing

Paternity test could be done much simpler when DNA samples were secretly obtained from other persons' personal belongings such as toothbrush, comb and bandages.
It sounds sneaky to obtain other persons' DNA samples by this methods but these methods are best way of getting DNA samples for DNA testing without upsetting or unnecessary provoke other persons.
How do we get the samples of DNA of other persons?
Step 1 - Look out for the toothbrush...
Discreet samples from the toothbrush or used bandaged can be sent to distinctive DNA testing centers but earlier it must be put in the large or regular envelope. Seal the envelope tightly with cellophane tape or paper glue. The best DNA test results are normally obtained from toothbrush.
Step 2: Locate suitable DNA testing center
Find one suitable DNA testing center to have the DNA sample analyzed for accurate results. Choose any DNA testing center according to your desirable locations. If you could not find any one of these centers in your area, try to look out for one via internet search.
Most of the DNA testing centers offer free DNA testing kits that available for people from all over the world. In this case, you will be charged for a small fee for postage fees. The results will be sent to you via mail, email and phone.
Make sure you read the terms and conditions of the chosen DNA testing center to clarify the agreement between the DNA testing center and their clients. It is advisable that you should have the habit of reading and understand the terms of conditions of the company's service before you make a decision.
Step 4: Start "Window Shopping"
"Window-shopping" for DNA testing centers is a must because DNA testing is indeed a competitive market and most of these DNA testing centers have already started to have promotional packages that give discounts to their first and frequent clients.
Hence, DNA testing is getting simpler and fast because of the improving cutting-edge DNA testing technology.
Step 5: Educate yourself about basics of DNA testing
You need to have some brief understanding on how DNA testing actually works. Basically, there are several methods in DNA testing in determining various kinds of relationships such as paternity test, siblings test, ancestry DNA test, and also twin zygosity test.
You will encounter some biological terms in your DNA testing report and do not hesitate to ask DNA testing consultants for questions.
When you have familiarized with all of these five steps above, start taking DNA sample secretly and send it to your preferable DNA testing center as soon as possible.

Is It Safe To Have Personal DNA Testing?

Getting your own DNA make up has created a fad among health-concern societies. Basically, one of the main purpose for a person who wants to have his DNA analyzed, is just to find out whether he needs to have to take any health precautions. Highly sensitive testing has been discovered to track down the probability of disease to occur. It sounds like it is some sort of a disease prediction and seems to be true - as we called it as "Genetic Horoscope".
Most of the DNA Testing centers provide personal testing services for public but it has also raised doubts about the reliability of testing. Is it safe to have our personal DNA tested as we fear that our results might slip into wrong hands?
This is an ongoing dispute which is involves several people in and out of law enforcement. In terms of practicality of the testing service, several investors have invested millions in improving the research of testing technologies and products that could solve larger problems concerning other than health issues such as forensic science, paternity testing and ancestry search.
This might probably weighing down criticisms against personal DNA testing. In addition, price of testing will be reduced due to competition that make it more affordable and cheaper service rates for public. It better that we succumb to the privacy issues as testing requires mass submission of DNA samples into the database. Certainly, problems such as mass submission of samples could slow down the process of investigation of misdemeanors.
As all human makes mistakes - we learn from the mistakes as systematic DNA database establishment is depends on public cooperation. It is vastly depends on public involvement to produce a well-organized DNA database.
A well established DNA database can upgrade our quality of our lives as it is relying on comparison and analysis of all of our DNA sequences in pursuance of unlocking the hidden truth in our genes. Every new discoveries is a lead to a new solution - so as testing. Having a personal testing is safe although it has contrary views from various fields of people. It can be much safer if it is well regulated by prioritizing better health and ethics system.
It is not like a donation - you do not donate your own DNA. Your DNA will be eliminated once the test are run. Optionally, you can also opt for secure DNA storage. It can be destroyed upon your request. Start making an internet search on testing centers. Spend some time on their terms and policies. Please clarify about it with their consultants. Most of the times education does pay in order to have a safe DNA testing.

How to Order a Legal DNA Test

Legal paternity testing offers legal proof-of-paternity/non-paternity for a variety of legal applications, including divorce and custody cases, birth certificate changes and visa applications.
If both legal and personal tests offer the same DNA evidence, what is it that makes a legal test legal?
The collector.
As an independent party to the case, the appointed DNA collector ensures that each participant is properly identified, witnessing the collection of each sample much like a notary public witnesses and collects a signature. The collector is responsible for mailing samples directly to the lab - eliminating the possibility of any tampering or contamination by participating parties.
DNA Worldwide is one of a select group of labs accredited by both the AABB and ISO 17025 standards bodies, the organizations responsible for monitoring the legal DNA testing process. The collection process and materials used are subject to strict AABB/ISO guidelines.
DNA Worldwide receives and processes the samples, notifying participants according to their requested method as soon as results become available.
As always, DNA Worldwide's Client Services representatives are available to provide assistance with this- or any other - testing process. Our goal is to make the entire procedure as smooth and painless as possible, for our clients.
The Collection Process*
DNA Worldwide provides the collector with a complete legal DNA collection kit, which includes the following forms and collection materials for each participant:
*Chain-of-custody forms *Pre-addressed air bill *Swabs/Envelopes *Instructions *Plastic bio-hazard bag
The list of all identification and documentation requirements includes government-issued photo identification (for parents/guardians - tested or not), birth certificates (for dependents), and - if applicable - proof-of-guardianship.
The collector reviews all identification and documentation, and - along with all participants - signs and dates photocopies of each. Each participant signs and dates the completed chain-of-custody form, which the collector certifies with their signature. Sample collection is completed in the collector's presence, after which test swabs are sealed in their respective envelopes, and--together with the completed documentation - are submitted to DNA Worldwide's lab for testing. Collectors are encouraged to use our Legal Test Collectors' Hotline 0845 2571217 for help with ordering and collecting a legal DNA test.

Effect Of Food On Dna

Food has tantalizing effect in human history as in the start of the human evolution. Each individual has gene variation in which the protein sequences are affected and most likely, the nutrient requirements, the likeliness of disease are varied to the appropriateness of the genetic makeup in oneself. Nutrigenomics is the term used for the study of genes and nutritional requirements. It has been found that food can interact with single nucleotide polymorphisms (SNIPs) in our DNA and activate certain genes.
For example, eating shrimp can cause skin allergy while assuming broccoli that is rich in anti cancer properties can activate detoxification.
Grapefruit has naringenin, a flavonoid rich in anti-cancer properties and induce DNA repair on affected cancer cells. The activation of naringenin will stimulate the Base Excision Repair (BER) cellular mechanism in DNA replication stage. The cancer preventive agent also rich in anti oxidant properties and could lower down cholesterol level in blood by 15%.
Sodium benzoate is a common preservative that is found in processed soft drinks to add flavoring. When tested on DNA of yeast, it could inactivate the DNA in mitochondria completely and later the cell malfunctions completely. Another study tied the preservative to neuro-degenerative diseases like Parkinson's and also the aging process.
Tocotrienols, the less studied of Vitamin E, may reduce DNA damage in cancer development by 50 percent. This important finding is related to oxidative stress and quenching of oxygen species by Vitamin E.
Eating kiwifruit can be a preventive measure against cancer as it can improve the DNA repair after peroxide is induced for cell damage. In one sense, the concept of nutrigenomics is already applied in modern medicine. Consider phenylketonuria, for example.
Infants with mutations in the PAH gene, which leads to impaired metabolism of phenylalanine, are fed a low- or no-phenylalanine diet for much of their childhood and usually into their adult life. Many other genes for simple metabolic disorders are tested in standard newborn screening assessments.
Most diseases, however, are much more complex. Advancing nutrigenomics for these diseases, and for overall health, will require dedicated, focused studies in genetics and epigenetics, as well as increased understanding of how genes, proteins, and epigenetic changes interact within networks and pathways.

DNA Testing In Early Cervical Cancer Detection

Pap smears has been traditionally used in cervical cancer detection that look for the the presence of human papillomavirus (HPV) in cervical cells which is the cause of most cervical cancer.
In addition to the traditional Pap smears, DNA testing for HPV from cervical cells has higher significance in detecting high-grade precancerous lesions.
An early detection able to avoid cancer from spreading to other parts of body.
It is matter of life and death if high accuracy and high sensitivity precancerous lesions detection able to be performed within a short period of time. Removal of benign tumor should be done as soon as possible.
Time is gold - The faster it detects, the faster it can save one's life.
However, DNA testing cannot be a replacement for Pap smears as it had created more false alarms that could force more woman to have further unnecessary medical workup.
Few things you need to know about HPV DNA Test:
1. It is only meant for woman over 30 years of age.
Women under 30 years of age will have asymptomatic infection with HPV. Woman after 30 and older have higher risk of high-grade precancerous lesions.
2. Highly-sensitive and specific molecular techniques for identifying HPV DNA in cervical specimens.
HPV DNA test was found to have slightly worse specificity than Pap smears due to the improving sensitivity of the test. This has created higher false positives rate than Pap testing.
3. Women over 30 to be tested every three years if they add the HPV DNA test to their regular testing regime.
If both tests (Pap and DNA Testing) are negative, screening is not repeated for three years.
Eventually, with the advancement of DNA testing of HPV, Pap smears testing can be replaced and women will have less frequent cervical cancer screenings.

DNA Testing Improves Identification Of Survivors

We human beings are born to be unique. Although twins of similar features and sexes are hard to be differentiated, there is still one big difference if you look enough underneath all the layers of organs. The answer lies in the genetic markers in our DNA.
In this case, we can even reconstruct genetic profile of someone distant in your family tree or missing family member as gene inheritance happens in family like from grandparents to parents and so forth.
This identification method that is now being used for situations that, due to decomposition and the loss of medical records, have exhausted all other available identification methods.
For example, the World Trade Center 2001 destruction, Hurricane Katrina 2005 and South East Asia tsunami chaos 2004 which resulted in thousands of death which may need few days or weeks to retrieve the bodies and to be brought back to the morgue as weather, lack of humanitarian volunteers, badly affected location and also lack of technology could improve situation.
Forensic and postmortem protocols could check on features like dental, fingerprint, sex, hair color and others. In addition, with further implementation like DNA matching, it is necessary for identification of children who were lacking little antemortem dental or fingerprint data.
With standardized procedures, it would be likely for months to correctly match the corpse using genetic markers. In addition, roughly only 50 to 60% of the 3025 persons who died in 9-11 chaos were managed to be identify in 18 months.
Certain DNA markers that are shared among a deceased individual's DNA profile and several survivors' reference sample profiles indicate that a relative has been found and can now be identified. Of course the high cost of DNA testing and lack of morgue with the expertise in those destructive places may lead to slow identification.
In 2006, the DNA Shoah Project was set to achieve its goal to give the departed Holocausts victims the last respect they deserved and to create a DNA database that can serve as both a genetic family tree and a memorial to those who perished.
The hope was to match these remains with DNA samples gathered from Holocaust survivors and from descendants of the departed.
The project's second aim: to unite those orphaned by the Holocaust with a close relative who survived. With a large database of living survivors, internal matches among them could also turn up.
DNA typing has often been portrayed in the media and the courtroom as a controversial technology but in a way, it certainly acts as a helping tool in identification tool in survivors or dead bodies. People say dead bodies don't talk, but if you study deep to their bones, they tell stories untold.
Nevertheless, the basic premise of the argument is valid and has been incorporated into recommendations about how forensic DNA testing be conducted and interpreted.