Physical Map
A physical map of a chromosome or a genome that shows the physical locations of genes and other DNA sequences of interest. Physical maps are used to help scientists identify and isolate genes by positional cloning.
Physical Maps
Physical mapping to produce overlapping yeast artificial chromosome (YAC) or cosmid contigs is still at a preliminary stage for chromosome 2.
Physical map
The linear order of genes and distance between them (usually expressed in base pairs or kilobases). Physical maps are constructed from in vitro characterization of the DNA (e.g. by restriction mapping or DNA sequencing).
Physical map: A map of the locations of identifiable landmarks on DNA, such as genes, or restriction enzyme cutting sites.
Polymerase: Polymerase is an enzyme that ac ts like a molecular assembly line to build new strands of DNA.
Physical map. A map showing physical locations on a DNA molecule, such as restriction sites, and sequence-tagged sites. (See Mapping.)
Plant Pest Act (PPA). See U.S. Department of Agriculture.
Physical map
A map of the locations of identifiable landmarks on DNA (e.g., restriction enzyme cutting sites, genes), regardless of inheritance. Landmarks include restriction endonuclease recognition sites, DNA sequence and chromosomal bands.
Physical map of the supercontinent Pangaea (~230 million years ago)
Paleogeographic reconstructions show Pangaea as a C-shaped landmass that was spread across the equator.
Genetic versus Physical Maps
Chromosome mapping by counting the number of recombinants produces a genetic map of the chromosome. But all the genes on the chromosome are incorporated in a single molecule of DNA.
Obtain a detailed physical map of every human chromosome, based on overlapping recombinant DNA molecules cloned as yeast artificial chromosomes.
C.
Clone human beings.
(See Continuous map, Genetic map, Physical map.) Megabase cloning. The cloning of very large DNA fragments. (See Cloning.) Meiosis.
MapViewer The MapViewer graphically displays genetic, sequence and physical maps of each Arabidopsis chromosome. Each map can be searched, browsed and zoomed in to display more detailed views.
Arrayed libraries of clones can be used for many applications, including screening for a specific gene or genomic region of interest as well as for physical mapping .
a messenger RNA template that corresponds to expressed sequences of genomic DNA. The term complementary DNA also may refer to DNA that is complementary to a particular DNA sequence. The single-stranded form is often used as a probe in physical ...
Physical map -- map where the distance between markers is the actual distance, such as the number of base pairs.
 See also: Genome, Mapping, DNA, Sequence, Human
|
