All or none previous example, let's say that three months later, your broker informs you that all 100 shares of JKL Co. are now available for purchase, but the stock price doubled from $2 to $4. Since you did not cancel this AON order, you are then forced to buy all the 100 shares of JKL Co. at double the price you intended. Using a limit order in conjunction with the AON order will prevent this from happening. All or none All or none (AON) is a finance term used in investment banking or securities transactions that refers to "an order to buy
Most recent common ancestor all of the modern population. Due to pedigree collapse, modern individuals may still exhibit clustering, due to vastly different contributions from each of ancestral population . Most recent common ancestor In biology and genealogy, the most recent common ancestor (MRCA, also last common ancestor (LCA), or concestor) of any set of organisms is the most recent individual from which all the organisms are directly descended. The term is also used in reference to the ancestry of groups of genes (haplotypes) rather than organisms. The MRCA of a set of individuals can sometimes be determined by referring to an established pedigree.