There is also no trace of pair-rule patterning during trunk segment patterning in the millipede, Glomeris marginata[ 26], although stripe splitting is observed in the head [ 41].
We found that there is no cell division that is consistent with a role in pair-rule stripe splitting, or in stripe 6 resolution, suggesting that the dynamics of the Nv eve mRNA pattern mostly involves transcriptional regulation.
Four double-segment periodicity stripes are split into single-segment stripes and stripe 5 remains intact.
Between 6 and 8 hr AEL, stripe 4/5 splits into distinct double-segment periodicity stripes 4 and 5, whereas stripes 1 and 2 split into single-segment periodicity segmental stripes.
In Drosophila, eve secondary stripes form de novo, between primary pair-rule stripes, in contrast to secondary paired stripes that later split from primary stripes, forming segmental stripes that affect all segments (Macdonald et al., 1986; Kilchherr et al., 1986).
Because of the subtle ways Mr. Grotjahn deploys color and line to play with perspective, it isn't immediately obvious that the lines originate not solely from one point, but also from an inch-wide stripe that splits the painting down the middle -- just like the vertical band in Barnett Newman's zip paintings.
These data suggest that a posterior Nv gt domain may partially affect stripe 6 splitting.
Or: "And a sudden stripe of light split earth from sky".
As gastrulation progresses between 8 and 10 hr AEL, double-segment pair-rule stripes 3 5 also split to give rise to two distinct single-segment stripes each.
Gastrula and later germ band embryos exhibit normal Nv eve double-segment stripe formation and splitting of stripes 4 and 5, which give rise to segments A1 A4.
