Table 1.

Population Sizes of Ashkenazi Jews and Their Ancestors Assumed in the Simulation Program

Year (a.d.)	ta	NTb
50	78	1,000,000c
70	77.2	N0d
1096	36.16	150,000
1348	26.08	N1e
1500	20	15,000f
1648	14.08	200,000f
1667	13.32	160,000f
1765	9.4	750,000f
1900	4	6,000,000f
2000	0	10,500,000g

^aGenerations before a.d. 2000, under the assumption of 25 years per generation.

^bThe effective population size was assumed to be 1/3 of these sizes.

^cBased on figure 1 of Barnavi (1992).

^dAllowed to vary; values of 150, 600, and 3,000 were used.

^eAllowed to vary; values of 600, 3,000, and 6,000 were used.

^fFrom Risch et al. (1995a).

^gFrom Motulsky (1995).