Fig. 2

Correlation of mtDNA copy number between parents and children. A Scatterplots show the Pearson’s correlation coefficients of mtDNA copy number between the female newborn and mother groups (left) and father groups (right). B Scatterplots show the Pearson’s correlation coefficients of mtDNA copy number between the male newborn and mother groups (left) and father groups (right). C Scatterplots show the Pearson’s correlation coefficients of mtDNA copy number between the mother and maternal grandmother groups (left) and maternal grandfather groups (right). D Scatterplots show the Pearson’s correlation coefficients of mtDNA copy number between the father and paternal grandmother groups (left) and paternal grandfather groups (right). Because four outcome measures (the mtDNA copy numbers for female newborns, male newborns, mothers, and fathers) were tested against two hypothesized predictors (the mtDNA copy numbers for their mothers and their fathers), a Bonferroni-adjusted significance level of 0.00625 (= 0.05/8)