Introduction To Dna Fingerprinting - 1 views
started by anonymous on 06 Jan 15
started by anonymous on 06 Jan 15
started by anonymous on 06 Jan 15
started by anonymous on 06 Jan 15
We read and see a lot of news reports where the police seemed to have solved a murder case by the blood or hair strand left behind by the criminal. It is all possible thanks to DNA fingerprinting or DNA typing or DNA profiling. DNAtyping also helps in finding out the paternity status of a baby. Well, these are the two common instances that people see every day. But there is a lot more to it, and this blog explains everything about DNA fingerprinting for a novice.
History
The technique of DNA profiling invented by the British geneticist called Alec Jefferys. He is quoted have had his 'eureka' moment when he unexpectedly found similarities and differences between the X-Ray film image of DNAs of different members of his technician's family. He then went on to define the methods in DNA profiling, which is now very important in forensic science. He has rightly been named the father of DNA fingerprinting.
How It Came About
There are regions in the human genome called Variable Number Tandem Repeats or VNTR in short. The VNTRs can be thought of as repeated numbers of letters or bases. It is like the same word repeated along a long line. Now these sequences are inherited along with the rest of the DNA from parents. But these VNTRs occur within parts of the genome called 'Non-coding regions' that aren't used to encode proteins. Hence, duplications or mutations occur much more in the VNTRs than in the other parts of the genome. This means a person is more likely to have the repeats very similar to a person closely related to him/her than with a distant relative or a stranger. So it is these numbers and sequences, that form the basis of DNA profiling in telling one person from the other and finding if the person is related to another person or not.
After Alec Jefferys made this breakthrough in 1984, his lab was the only lab that did DNA profiling and cases from all over the world started pouring into his lab. It became hectic, and it was more than his lab could handle. Finally, the process was commercialized in 1987.
DNA Profiling Today
Instead of VNTR, a different sequence called Short Tandem Repeats or STRs are used. It follows a concept similar to VNTR except it is better and stand out better to the degradation of DNA over time. It makes it much more useful in solving criminal cases.
Use of DNA fingerprinting to analyze the effect of the Trivedi Effect® on the microbes and plants
The effect of the whole new natural phenomenon founded by Mahendra Trivedi on plants and microbial genetics is assessed and analyzed using the DNA fingerprinting method and it has proved that the biofield Energy Transmission of the Trivedi Effect® has opened up new ways to transform the microbes and the plants for the benefit of humans.
About Author:-
The author is associated with Trivedi Science and has written many contents on genetics research, poultry research, science experiments etc.