WebA DNA microarray (also commonly known as DNA chip or biochip) is a collection of microscopic DNA spots attached to a solid surface.Scientists use DNA microarrays to measure the expression levels of large numbers of genes simultaneously or to genotype multiple regions of a genome. Each DNA spot contains picomoles (10 −12 moles) of a …

WebIn genetics, complementary DNA (cDNA) is DNA synthesized from a single-stranded RNA (e.g., messenger RNA or microRNA (miRNA)) template in a reaction catalyzed by the enzyme reverse transcriptase. cDNA is often used to clone eukaryotic genes in prokaryotes.When scientists want to express a specific protein in a cell that does not …

WebMicroarray. Un microarray di DNA (comunemente conosciuto come gene chip, chip a DNA, biochip o matrici ad alta densità) è un insieme di microscopiche sonde di DNA attaccate ad una superficie solida come vetro, plastica, o chip di silicio formanti un array (matrice). Tali array permettono di esaminare simultaneamente la presenza di moltissimi …

WebDNA is a long polymer made from repeating units called nucleotides, each of which is usually symbolized by a single letter: either A, T, C, or G. The structure of DNA is dynamic along its length, being capable of coiling into tight loops and other shapes. In all species it is composed of two helical chains, bound to each other by hydrogen bonds. ...

WebDNA-Sequenzierung ist die Bestimmung der Nukleotid-Abfolge in einem DNA-Molekül. Die DNA-Sequenzierung hat die biologischen Wissenschaften revolutioniert und die Ära der Genomik eingeleitet. ... (DNA-Chip oder Microarray) kurze DNA-Abschnitte (Oligonukleotide) in Reihen und Spalten fixiert. Die Fragmente der zu sequenzierenden …

WebDNA microarray. DNA microarrays are a useful analytical application of oligonucleotides. Compared to standard cDNA microarrays, oligonucleotide based microarrays have more controlled specificity over hybridization, and the ability to measure the presence and prevalence of alternatively spliced or polyadenylated sequences.

WebMolecular genetics is a sub-field of biology that addresses how differences in the structures or expression of DNA molecules manifests as variation among organisms. Molecular genetics often applies an "investigative approach" to determine the structure and/or function of genes in an organism's genome using genetic screens. The field of study is based on …

WebA distinct group of DNA-binding proteins are the DNA-binding proteins that specifically bind single-stranded DNA. In humans, replication protein A is the best-understood member of this family and is used in processes where the double helix is separated, including DNA replication, recombination and DNA repair. These binding proteins seem to stabilize …

WebFermentation is a metabolic process that produces chemical changes in organic substrates through the action of enzymes.In biochemistry, it is narrowly defined as the extraction of energy from carbohydrates in the absence of oxygen. In food production, it may more broadly refer to any process in which the activity of microorganisms brings about a …

WebMeta databases. Meta databases are databases of databases that collect data about data to generate new data. They are capable of merging information from different sources and making it available in a new and more convenient form, or with an emphasis on a particular disease or organism.[metadatabase is a database model for metadata management, …