Deoxyribonucleic acid (DNA) is a double-stranded, helical molecule that forms the molecular basis for heredity. For replication (duplication) to occur, DNA must first unwind, or "unzip," itself to allow the genetic information-encoding bases to become...

The analysis of DNA from ancient material is a recent technological advance that has produced and promises further important scientific insights. It has also inspired the popular book Jurassic Park, by Michael Crichton, and the film of the same name....

Dna An organic substance that encodes and carries genetic information and is the fundamental element of heredity. The thousands of genes that make up each chromosome are composed of deoxyribonucleic acid (DNA), which consists of a five-carbon sugar...

Deoxyribonucleic acid (DNA) consists of two twisted polymeric strands, made up of mononucleotide units. Each nucleotide is composed of three separate parts: a 2-deoxyribose sugar ("2-deoxy-" because the hydroxyl or -OH group of the ribose sugar is...

Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions used in the development and functioning of all known living organisms. The main role of DNA molecules is the long-term storage of information. DNA is often compared to...

But this afternoon, when Police Commissioner Ray Kelly was asked about whether the proposed database would compromise privacy, he said "That's why the Mayor is setting the standard at convictions." Indeed, the mayor made clear that only convicted criminals would have to provide DNA samples....

A mother and daughter separated decades ago during El Salvador's brutal civil war have become among the first to find each other _ and the answers they longed for _ thanks to a DNA database.Angela Fillingim, 21, grew up in Berkeley knowing she had been...

A woman has proven through DNA testing that she is a child of the late James Brown, said a longtime adviser to the soul singer. The woman is the third person to determine through DNA testing done after Brown's death that the singer is their...

Two services launching just a week apart tap a growing interest in DNA testing to help people find their ancestors and learn more about their lives.GeneTree, which opens Tuesday, and Ancestry.com, which started its DNA Ancestry service last Tuesday, both sell DNA kits for less...

The purpose, materials, procedures, conclusion, and application of a DNA experiment intended to better understand restriction enzymes and how to manipulate them through isolation of a particular gene. In the experiment, restriction enzymes help to cut the Lambda DNA into different fragments and separate those fragments using gel electrophoresis, which scientists can find helpful in finding preventions or cures for different kinds of diseases.

Through the discovery of the structure of DNA and the vast collection of knowledge of gene function, it is theoretically possible to change the human genome and eliminate the mistakes in the DNA code that cause disorders. Although this prevention of disease is theoretically possible, public fears and apprehensions have prevented this science from being applicable to humans thus far.