Mammalian Chromosomes In Vitro. XVII. Idiogram of the Chinese Hamster2

Abstract

From 67 diploid male Chinese hamster cells in vitro, an idiogram was constructed. The chromosomes can be classified into 4 natural groups: group I, 2 pairs of large submetacentrics (1 and 2); group II, 3 pairs of mediumsized submetacentrics (the sex pair, 4 and 5); group III, 3 pairs of mediumsized subtelocentrics (6, 7, and 8); group IV, 3 pairs of small metacentrics (9, 10, and 11). A system of subdividing each chromosome into regions is also suggested.