An Sp6-9 ortholog is expressed in developing legs in the tardigrade Hypsibius exemplaris
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Orthologs of the zinc finger transcription factor-coding gene Sp6-9 are expressed in developing appendages across Arthropoda and in Onychophora. Sp6-9 regulates appendage outgrowth in some arthropods by activating Distal-less (Dll) expression. This function ha... ...
