Table 1.

Correction of kinship coefficient for different genome coverage of ancient samples with known first-degree relation. High, medium, and low refer to coverage levels

Sample 1	Sample 2	Marker overlap fraction	Relation	Expected kinship coeff	Uncorrected kinship coeff	Corrected kinship coeff
Father high	Child high	0.933894	First degree	0.25	0.22883	0.24502
Father high	Child low	0.377769	First degree	0.25	0.09179	0.24297
Father medium	Child high	0.730011	First degree	0.25	0.17604	0.24114
Father medium	Child low	0.296127	First degree	0.25	0.07150	0.24144
Father low	Child high	0.511753	First degree	0.25	0.12239	0.23915
Father low	Child low	0.207545	First degree	0.25	0.05014	0.24160
Father high	Father medium	0.778247	Sample matching	0.5	0.38284	0.49193
Father high	Father low	0.545866	Sample matching	0.5	0.27020	0.49499
Father medium	Father low	0.427389	Sample matching	0.5	0.20863	0.48814
Child high	Child low	0.354511	Sample matching	0.5	0.17286	0.48761
Sample	Sample type	Coverage	Typed marker count (1240k)
Father high	Teeth	11.997	1,148,973
Father mid	Petrosa	3.057	896,623
Father low	Petrosa	1.546	630,405
Child high	Petrosa	5.510	1,075,845
Child low	Petrosa	0.879	435,005