How the Ghosts Stole Christmas episode. Carter agreed to meet her and the two discussed possible ideas for futures episodes. After several years of thinking, Carter decided to write "How the Ghosts Stole Christmas" largely as a vehicle for her. Originally, Carter wanted Bob Newhart to play the part of Maurice. However, Newhart was not interested, and so the production team approached Ed Asner, who readily agreed to take part in the episode. The production for the episode was bare-bones, making use of only a few sets. Because of this, "How the Ghosts Stole Christmas" was the cheapest sixth season episode; however, the reduction in
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.