Table 2

Haplogroups age estimation

Age assuming a 1 MY calibration point (95% HPD)

Age assuming a 2 MY calibration point (95% HPD)

Age computed in Achilli et al. 2009 under a fixed topology model


RPQT

83.2 (68.2 - 99.0)

166.9 (138.0 - 197.4)

135.3 (13.1)

PQT

45.6 (35.8 - 55.7)

91.4 (72.1 - 111.7)

70.8 (8.8)

QT

34.4 (26.8 - 42.5)

69.1 (54.1 - 85.6)

48.2 (7.2)

T

18.3 (14.4 - 22.5)

36.5 (28.7 - 45.5)

15.8 (3.1)

T2

12.6 (9.4 - 16.1)

25.2(18.5 - 31.6)

10.4 (0.9)

T5

8.8 (3.8 - 14.3)

17.2 (7.2 - 28.5)

10.2 (3.0)


The estimated age (median and 95% HPD of the posterior distribution, in thousands of years) of several key monophyletic clades was calculated assuming that the B. taurus - B. bison divergence occurred 1 MYA [35]. This calibration point is compatible with the demographic expansion detected in cattle mitochondrial data resulting from the Neolithic domestication event. Ages are also calculated assuming that B. taurus - B. bison diverged 2 MY [27]. For comparison, the last column reports the maximum likelihood estimates obtained in a previous study based on the 2 MY calibration point but a fixed topology [28], with standard errors in parenthesis.

Lari et al. BMC Evolutionary Biology 2011 11:32   doi:10.1186/1471-2148-11-32

Open Data