Pattern of ac transposition in maize.
Analysis of four nearby transpositions of Ac from the waxy locus indicate that the element can reinsert to either side. The cause of the asymmetry observed for P-VV transpositions is discussed and a model is presented to account for the high frequency of close reinsertions of Ac.
Schwartz
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Department of Biology, Indiana University, Bloomington, Indiana 47401.