  We modelled and calibrated the distributions of the seven-stripe patterns of
Even-skipped (\textit{Eve}) and Fushi-tarazu (\textit{Ftz}) pair-rule proteins
along the anteroposterior axis of the Drosophila embryo, established during
early development. The regulators of \textit{Eve} and \textit{Ftz} are
stripe-specific enhancers from the gap family of proteins and determine the
body structure of the \textit{Drosophila} larva. We achieved remarkable data
matching of the \textit{Eve} stripe pattern, and the calibrated model
reproduces gap gene mutation experiments. We have identified the putative
repressive combinations for five \textit{Eve} enhancers, and we have explored
the relationship between \textit{Eve} and \textit{Ftz} for complementary
patterns. Extended work inferring the Wingless (\textit{Wg}) fourteen stripe
pattern from \textit{Eve} and \textit{Ftz} enhancers has been proposed,
clarifying the hierarchical structure of \textit{Drosphila}'s genetic
expression network during early development before cellularisation.
