Fig. 6: Schematic representation of the early prehistoric eastward movements of two subspecies of Mus musculus, MUS and CAS, as predicted from the mitogenome sequences. | Heredity

Fig. 6: Schematic representation of the early prehistoric eastward movements of two subspecies of Mus musculus, MUS and CAS, as predicted from the mitogenome sequences.

From: House mouse Mus musculus dispersal in East Eurasia inferred from 98 newly determined complete mitochondrial genome sequences

Fig. 6

The movement of MUS was achieved mainly by the sublineage MUS-1 and involved five historical processes (Steps I–V): (1) the initial spread of MUS-1 to northern Eurasia, including westernmost western China, (2) movement to the eastern part of western China, (3) expansion to northern China, (4) introduction to the Korean Peninsula and (5) colonisation of Japan by a descendant lineage of the Korean haplotype group. Eastward movement of the CAS lineage was conducted by the sublineage CAS-1, resulting in geographic coverage to the northernmost part of China by 9000 years ago. The second CAS-1 dispersal event is movement either from the eastern coast of India to southern China or vice versa. The next step is a simultaneous dispersal event from southern China to several peripheral regions, including the eastern coast of India, Sri Lanka and Bangladesh. The final step is dispersal from southern China to the Japanese Archipelago, Russian Far East and Yunnan, China. Possible times (×1000 years ago) of the dispersal events are shown.

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