DEOXYRIBONUCLEIC ACID, OR DNA, exploded onto the criminal justice scene a mere twenty years ago. Its arrival was stunning. Right away it seemed that the police had a tool that could cull order out of the chaos of crime scenes and quickly separate the...
DNA was discovered in the nineteenth century, but its significance as the physical basis of inheritance was not understood until midway through the twentieth. The realization that it was the molecule of heredity led to intensive efforts to determine...
The modern science of genetics can be traced to the research of a Moravian monk, Gregor Mendel, in the mid-1800s. Mendel was able to develop a series of laws that described mathematically the way hereditary characteristics are passed along from one...
The modern science of genetics can be traced to the research of a Moravian monk, Gregor Mendel, in the mid-1800s. Mendel was able to develop a series of laws that described mathematically the way hereditary characteristics are passed along from one...
DNA, or deoxyribonucleic acid, is the genetic material that codes for the components that make life possible. Both prokaryotic and eukaryotic organisms contain DNA. An exception is a few viruses that contain ribonucleic acid, although even these...
Genetics is the science of heredity that involves the study of the structure and function of genes and the methods by which genetic infomation contained in genes is passed from one generation to the next. The modern science of genetics can be traced to...
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...
DNA footprinting is a technique for identifying exactly where a protein binds to DNA. Knowing where a protein binds to DNA often aids in understanding how gene expression is regulated. Consequently, DNA footprinting is often part of a larger study to...
Deoxyribonucleic acid: the inheritable, chemical substance found in all cells containing genetic codes required to make PROTEINS. DNA is a helical polymer, composed of two strands of NUCLEOTIDES, each joined by a deoxyribose sugar backbone. There are...
Hot spots are regions of the prokaryotic and eukaroytic genomes that are prone to mutational alteration. These regions are often associated with cytosine, on of the four bases comprising deoxyribonucleic acid. Cytosine residues are commonly...
Deoxyribose nucleic acid (DNA) molecules contain genetic information that is the blueprint for life. DNA is made up of long chains of subunits called nucleotides, which are nitrogenous bases attached to ribose sugar molecules. Two of these chains...
A complex organic polymer classified as a nucleic acid. It has a double helix structure. It is self-replicating and stores the genetic information necessary for cell replication. DNA is located in the CHROMOSOMES of the cell and passes on genetic...
The molecule of heredity, a nucleic acid of complex molecular structure forming a principal constituent of the genes; known to play an important role in the genetic action of the chromosomes. DNA is composed of deoxyribonucleic building blocks, each...
A calculation based on population genetics that allows individual allele frequencies and genotype frequencies to be multiplied together to generate an overall profile frequency. (Forensic psychology) Another name for the Durham rule, a legal definition...
A DNA profile consists of a set of DNA identification characteristics, i.e., the particular chemical form at the various DNA locations (loci) that permit the DNA of one person to be distinguishable from that of another...
Deoxyribonucleic acid; Desoxyribonucleic acid Occurs in all chromosomes. Essential carrier of genetic information for inheritance and the direction of cell...
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...
