Gersh E S
Science. 1968 Dec 6;162(3858):1139. doi: 10.1126/science.162.3858.1139.
An allele of the bobbed locus (bobbed bristle) behaved in crosses with other bobbed alleles as a weak isoallele to which extreme bobbed alleles were dominant. The results are consistent with the hypothesis that the bobbed locus contains multiple cistrons, some threshold number of which are needed to produce ribosomal RNA and the normal phenotype.
截毛位点(截毛刚毛)的一个等位基因在与其他截毛等位基因杂交时,表现为一种弱等(位)基因,极端截毛等位基因对其呈显性。这些结果与以下假说相符:截毛位点包含多个顺反子,产生核糖体RNA和正常表型需要其中一些达到阈值数量的顺反子。