Microsatellite
Videos
A microsatellite is a tract of repetitive DNA that consists of a particular sequence of base pairs repeated a large number of times. Microsatellites occur at thousands of locations within an organism'
DNA strand slippage during replication of an STR locus. Boxes symbolize repetitive DNA units. Arrows indicate the direction in which a new DNA strand (white boxes) is being replicated from the template strand (black boxes). Three situations during DNA replication are depicted. (a) Replication of the STR locus has proceeded without a mutation. (b) Replication of the STR locus has led to a gain of one unit owing to a loop in the new strand; the aberrant loop is stabilized by flanking units complementary to the opposite strand. (c) Replication of the STR locus has led to a loss of one unit owing to a loop in the template strand. (Forster et al. 2015)
A partial human STR profile obtained using the Applied Biosystems Identifiler kit
DNA profiling
Videos
DNA profiling is the process of determining an individual's deoxyribonucleic acid characteristics. DNA analysis intended to identify a species, rather than an individual, is called DNA barcoding.
Microsatellite
…higher mutation rate than other areas of DNA leading to high genetic diversity. Microsatellites are often referred to as short tandem repeats (STRs) by forensic geneticists and in genetic genealogy, or as simple sequence repeats (SSRs) by plant geneticists. Microsatellites and their longer cousins, the minisatellites…
Restriction Fragment Length Polymorphism
CBP chemist reads a DNA profile to determine the origin of a commodity.