Aside from the diamond, the ruby, sapphire, emerald, pearl (not, strictly speaking, a gemstone) and opal have also been considered to be precious. Up to the discoveries of bulk amethyst in Brazil in the 19th century, amethyst was considered a precious stone as well, going back to ancient Greece.
A restriction map is a map of known restriction sites within a sequence of DNA. Restriction mapping requires the use of restriction enzymes.In molecular biology, restriction maps are used as a reference to engineer plasmids or other relatively short pieces of DNA, and sometimes for longer genomic DNA.ased on the sizes of the resultant DNA fragments the positions of the sites can be inferred. Restriction mapping is a very useful technique when used for determining the orientation of an insert in a cloning vector, by mapping the position of an off-center restriction site in the insert (Dale, Von Schantz, 2003).
Illustrations/Comparisons/Contrasts. Related Terrain Products: Subset products. Other related mapping. Types of Terrain Mapping. Terrain Inventory Mapping. Terrain inventory mapping is a multi purpose inventory of the surficial geology, geological processes and geomorphological features in the landscape.t is important to read the project report and familiarize yourself with the criteria used for the evaluation of slope stability and to understand the limitations of the mapping. There are two types of terrain stability maps: reconnaissance and detailed terrain stability mapping.