This chart shows the average interval in years between father and son pairs in the Sorenson Y-chromosome database. The table shows three methods of determining the generation interval. The TMRCA page uses the median value for converting the number of generations to years. 
| Generation Statistics | Years | | Mean generation interval: | 32.6 | | Median generation interval: | 31 | | Modal generation interval: | 26 | | Number of father/son pairs: | 112,641 |
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