This variant served as the basis for subsequent variants. Following the introduction of the Glock 17, numerous variants and versions have been offered. There is a strong link with certain genetic variants. This gives a genomic heritability estimate based on the variance captured by common genetic variants. There is debate on whether they are MS variants or different diseases. Other classifications for the major Dalek variants exist. Many capture the flag variants are also available. It exists in a number of regional variants, plus modern forms. This is the first version to ship in 32-bit and 64-bit variants. Several other proposed variants never entered production. Identification of T-34 variants can be complicated. Some 860 of the basic transport variants were manufactured. The identification of T-34 variants can be complicated. A wide range is available of flying disc variants. Shogi has the highest game complexity of all popular chess variants.