The Office Christmas specials BBC as "a little Christmas present to the nation". The second series of "The Office" averaged four million viewers per week when it was broadcast on BBC Two. To get as many viewers as possible for the Christmas specials, the BBC's director of television Jana Bennet allowed it to be moved to BBC One. The ratings were deemed a success by the BBC; Part 1 received 7.17 million viewers and a 30.97% share of the audience, and Part 2 received 6.14 million viewers and a 25.66% share. Part 1 was the third most popular programme on Boxing Day for 16-
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.