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The orc2 Mutant.
(A) Developing seeds of orc2/+ plants showing the typical seed abortion phenotype (white arrowheads) and the less common translucent phenotype (yellow arrowhead).
(B) Predicted gene structure of AtORC2 and flanking genes. The insertion site of the Ds transposable element in the orc2 mutant allele is indicated. The genomic fragment used to complement the orc2 mutant is shown by a black bar.
