Originally, this genus included all epiphytic orchids. As knowledge of the different types of orchids expanded, the classification became much more refined; for example, there are now some terrestrial species in the Epidendrum genus, and a great many other species have been moved to other genera.atasetum orchids, along with the other members of the Catasetum alliance, have big, thick pseudobulbs with an attractive fan of thin leaves along their length. The flowers can be very showy, but are unisexual, so that male and female flowers look different.
home history back. What is the Notchâ? The term âNotchâ refers to the disparity in Social Security benefits paid to people born from 1917 through 1926 and those paid to people born before and after them with similar work and earnings records.
The core elements of the Notch signaling system include the Notch receptor, DSL ligands (Delta and Serrate/Jagged in Drosophila and vertebrates, Lag2 in Caenorhabditis elegans) and CSL DNA-binding proteins (CBF1/RBPJ-kappa in vertebrates, Su(H) [Suppressor of hairless] in Drosophila, Lag1 in C. elegans).he growing array of multiple genes for each ligand as well as genes for numerous modulators of Notch pathway confers extensive complexity on this signaling system. (Ref.2). Notch proteins (and ligands) contain extracellular EGF (Epidermal Growth Factor)-like repeats, which interact with the DSL domain of ligands.