Null mutants of Drosophila B-type lamin Dm(0) show aberrant tissue differentiation rather than obvious nuclear shape distortion or specific defects during cell proliferation.

Abstract excerpt

To elucidate the function of metazoan B-type lamins during development, new null mutations of the Drosophila B-type lamin gene, lamDm(0), were analyzed in parallel with the misg(sz18) mutation, a lamDm(0) allele reported previously. Although in all these mutants, lamin Dm(0) protein was undetectable in neuroblasts and imaginal disc cells from the second instar larval stage onward, cells continued to proliferate....

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