Short tandem repeats (STRs), also known as microsatellites, are short DNA sequences containing core repeat units of between 2-7 nucleotides (nts) which are tandemly repeated. The STR analysis is commonly used in molecular biology laboratories in order to identify DNA samples by comparing STR <em>loci</em> between samples. For example, the Federal Bureau of Investigation (FBI) uses 13 STR <em>loci</em> for the identification of individuals in the USA. It is important to note that these 13 <em>loci</em> are independently assorted (i.e. they are not linked), and thereby their combined use results in a very low ("nearly zero") false-positive identification rate.
Hydrolysis reactions can be the reverse of a condensation reaction in which two molecules join into a larger one and eject a water molecule. Thus hydrolysis adds water to break down, whereas condensation builds up by removing water.
The major artery that supplies blood to the entire body is the 《 Aorta 》 <span>It carries oxygen-rich blood away from the heart to vessels that reach the rest of the body.</span>
