Maroni G, Laurie-Ahlberg C C
Genetics. 1983 Dec;105(4):921-33. doi: 10.1093/genetics/105.4.921.
Natural variants displaying different levels of expression of the gene for alcohol dehydrogenase (Adh) were subjected to genetic mapping experiments. The strains studied carry one of the two common electrophoretic forms of the enzyme. The difference among Adh-fast strains appears to be due to multiple loci with trans-acting effects. Differences among Adh-slow strains are due to modifiers or quantitative sites located very close to the structural gene (less than 0.05 map unit) or part of it. The modifiers detected in the Adhs strains seem to operate only on the structural allele in the cis-position.--A modifier that affects the ratio of ADH levels in larvae and adults was also detected in the Adhs strains. This modifier is also closely linked to Adh and is cis-acting.
对显示出不同水平乙醇脱氢酶(Adh)基因表达的天然变异体进行了遗传定位实验。所研究的菌株携带该酶的两种常见电泳形式之一。Adh-fast菌株之间的差异似乎是由于具有反式作用的多个基因座所致。Adh-slow菌株之间的差异是由于位于结构基因(小于0.05个图距单位)或其一部分附近的修饰基因或数量位点所致。在Adhs菌株中检测到的修饰基因似乎仅对顺式位置的结构等位基因起作用。——在Adhs菌株中还检测到一个影响幼虫和成虫中ADH水平比例的修饰基因。该修饰基因也与Adh紧密连锁且具有顺式作用。