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BoardGameGeek was founded in January 2000 by Scott Alden and Derk Solko, [6] and marked its 20th anniversary on 20 January 2020. [7]Since 2005, BoardGameGeek hosts an annual board game convention, BGG.CON, that has a focus on playing games, and where winners of the Golden Geek Awards are announced.
[40] Such ranks are used simply because they are required by the rank-based codes; because of this, some systematists prefer to call them nomenclatural ranks. [ 1 ] [ 6 ] In most cases, higher taxonomic groupings arise further back in time, simply because the most inclusive taxa necessarily appeared first. [ 41 ]
A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae , but that family is commonly referred to as the "walnut family".
Population structure (also called genetic structure and population stratification) is the presence of a systematic difference in allele frequencies between subpopulations. In a randomly mating (or panmictic) population, allele frequencies are expected to be roughly similar between groups. However, mating tends to be non-random to some degree ...
The taxon must be given a name based on the 26 letters of the Latin alphabet (a binomial for new species, or uninomial for other ranks). The name must be unique (i.e. not a homonym). The description must be based on at least one name-bearing type specimen.
Carl Woese made a revolutionary breakthrough when, in 1977, he compared the nucleotide sequences of the 16s ribosomal RNA and discovered that the rank "domain" contained three branches, not two as scientists had previously thought. Initially, due to their physical similarities, Archaea and Bacteria were classified together and called ...
Population genetics is a subfield of genetics that deals with genetic differences within and among populations, and is a part of evolutionary biology.Studies in this branch of biology examine such phenomena as adaptation, speciation, and population structure.
The number of board games published by year (1944–2017), as listed on BoardGameGeek. Expansion sets for existing games are marked in orange. Expansion sets for existing games are marked in orange. In the late 1990s, companies began producing more new games to serve a growing worldwide market.