--Kim Hagemann and Peter A. Peterson
The a1-m(r)102 allele reduces the excision of En-1. The
wx-844 allele containing En-1 is known to exhibit a coarse
wx mutability pattern in genotypes not carrying the a1-m(r)102
allele. When genotypes carry wx-844 and a1-m(r)102 a distinctly
distinguishable wx mutability pattern a-m(r) effect and a
heavy kernel spotting pattern occur (Cuypers et al., EMBO J. 7:2953, 1988).
Kernels having lower spotting patterns than normal in the presence of a1-m(r)102
were isolated from the following cross: a1-m(r)102 wx-844 x a1-m15719A
Wx. These kernels were then crossed onto homozygous a1-o wx.
These exceptions yielded phenotypes that are designated in the table
below. These mutants of a1-m(r)102 will be useful in identifying
the sequences of a1-m(r)102 which alter and contribute to the suppression
of En-1 excision, i.e. a coarse to fine pattern of wx-mutability.
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