Associations between functional connectivity (FC), gestational age (GA), and sex. Red squares indicate network pairs that were significantly more enriched with strong rs-fMRI correlations with GA in female fetuses than male fetuses. Blue squares indicate networks exhibiting stronger enrichment of FC-GA correlations in male than female fetuses. PFC, prefrontal cortex; SFG, superior frontal gyrus; SMA, somatomotor area; aIN, anterior insula; IFG, inferior frontal gyrus; Vis, Visual; pParietal, posterior parietal; PCC, posterior cingulate cortex; CB, cerebellum; inf Temp, inferior temporal; pIN, posterior insula; TPJ, temporo-parietal junction; SC, subcortical grey matter (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article).