How can conserved gene expression allow for variation? Lessons from the dorso-ventral patterning gene muscle segment homeobox.

Abstract excerpt

Arthropods are common in marine, freshwater, terrestrial, and even aerial environments. The arthropod nervous systems must be adjusted to the highly diverse behaviour and requirements of the individual arthropod species. This raises the question of how the underlying patterning mechanisms have changed during arthropod evolution to produce the characteristic axonal scaffold on the one hand and allow for variations...

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