Haplogroup DF21 Age Estimation
- Per FTDNA, Haplogroup R-DF21 represents a man who is estimated to have been born around 3,600 years ago, plus or minus 550 years. That corresponds to about 1600 BCE with a 95% probability he was born between 2150 BCE and 1050 BCE.
- Per Alex Williamson's Big Tree age estimations (method of Dr. Iain McDonald), the median age of this block is 4536.09 YBP (2587 BC). The 95% confidence interval is 3185 BC to 2073 BC.