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. Author manuscript; available in PMC: 2016 Jul 1.
Published in final edited form as: Hum Genet. 2015 Apr 29;134(7):803–808. doi: 10.1007/s00439-015-1558-1

Figure 1. Quantile-Quantile (QQ) plots for gestational age (GA) across two generations.

Figure 1

(a) Paternal GA versus offspring GA. (b) Maternal GA versus offspring GA. In both panels, GA in the parent is represented on the x- axis and GA of the offspring on the y-axis. Each dot represents the value of (x,y) for different cumulative percentiles. The diagonal line represents the expected y = x relationship. Both the paternal and maternal plots show skewing below the diagonal, resulting in a bias towards individuals with larger GA as parents.