Worm Breeder's Gazette 5(2): 32
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[See Figure 1] Already published allelism: Wood et al., 1980: b117=b189; b246 = let- 2.Miwa et al., 1980: hc57 = hc62; hc61 = hc67. Our global complementation results: g1 = g4; g16 = g65 = hc61 = hc67; g36 = hc65; g23 = g34 = hc70 = b117 = b189; g37 = b246 = let-2; b84 = hc66; g14 = g43; g57 = b1O. From frequency of multiple alleles we estimate 200-400 genes essential for embryogenesis. Mapping is in progress. We are also doing tsp's, R + H Tests, and cellular defects ( Isnenghi, Cassada, Radnia, Schierenberg, K. Smith, v. Ehrenstein).