作者: Hans-Werner Kuhlmann , Klaus Heckmann
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摘要: Ten mating types are known for the hypotrich ciliate Euplotes octocarinatus. The determined by four codominant alleles that control production of gamones. gamones induce mature cells certain other to get ready conjugation. That respond only they do not synthesize themselves is rationalized assuming competence specified gamone-specific receptors and express those themselves. Here we show exconjugant clones initially composed neither release nor If heterozygous therefore capable producing two gamones, start at a clonal age about 15 fissions first one gamone five ten later second gamone. Later still, their capacity develops, then Cells responding in maturity three often acquire this steps. These results support our assumption E. octocarinatus perceived receptors. We propose genes coding these derepressed individually development. same assumed derepression code further have all but down-regulate which corresponding