Understanding DNA Technologies


Without a doubt, DNA technologies has revolutionized the world of science.  Scientific fields of biochemistry, genetics, biology and even forensics have been changed by the use of this strong technology.  Deoxyribonucleic acid, otherwise identified as DNA, is an organism’s genetic material.  This technologies has solved many mysteries behind evolution, illnesses and even human behavior.

DNA technology is also becoming broadly employed to confirm biological relationships and the identity of people living or deceased.  Key advances in DNA profiling have enabled DNA tests to be completed in just a short time.

There are numerous technologies utilized in DNA testing.  The most typical of which are Electrophoresis,  Short Tandem Repeats (STRs), Polymerase Chain Reaction (PCR), Mitochondrial DNA Sequencing (mtDNA Sequencing) and Restrictive Fragment Length Polymorphism or RFLP.  A brief description of each technologies is supplied under.

Electrophoresis is a approach in separating DNA fragments according to size by introducing an electric field into the DNA molecule.  The DNA molecule is set on a viscous medium, referred to as the gel.  Longer and smaller molecules are separated due to the fact of their diverse abilities to pass by way of the gel.

Brief Tandem Repeats (STRs) is a type of DNA analysis performed to examine particular places in a DNA.  Each person has variations in certain DNA regions.  These differences are utilised to ascertain the identity of an person.

Polymerase Chain Reaction (PCR) is a method employed to develop precise DNA replications.  Millions of replications are designed thereby allowing DNA analysis to be performed on samples that are really tiny such as a couple of skin cells.  The sample even though should not be contaminated by DNA of one more source.

Mitochondrial DNA Sequencing (mtDNA Sequencing).  There are two kinds of cells in a DNA – nuclear DNA and mitochondrial DNA.  There are circumstances wherein a sample is as well old and no longer has nuclear DNA.  mtDNA Sequencing is a technique employed to recover mitochondrial DNA.  Forensics makes use of this variety of technologies on circumstances that have been unsolved even soon after so many years.

Restrictive Fragment Length Polymorphism (RFLP) DNA technologies is one of the initial technologies utilized in DNA analysis and is no longer extensively utilised.  RFLP analyzes distinct lengths of DNA fragments from the digestion of a sample with a restriction endonuclease enzyme.