A service of Family Tree DNA.

Current Version: 2 February 2002.

Main TMRCA page --- All the very technical details

Mutation rate: The time calculations are highly depend on both the mutation rate and model assumed. As our knowledge of these grows, the pages will be updated to reflect these changes, including allele-specific rates. For now, we use an average value for the mutation estimates. You can also see the effect of assuming mutation rates at the upper and lower ends of the current estimates.

Click below for Times for Your Desired mutation rate (u)

• Standard (u = 0.002) -- our best current estimate.

• High Mutation (u = 0.004) -- produces shorter times

Standard mutation rate (u = 0.002)

How to read these cumulative probability plots and tables

High mutation rate (u = 0.004)

How to read these cumulative probability plots and tables