Abstract

Hybrid cells from mouse erythroleukemia and yolk-sac cells from 12-day-old mouse embryos were formed, and the expression of adult β-globin and embryonic y-globin genes was examined. In these hybrid cells, hemoglobin synthesis could be induced by the addition of dimethylsulfoxide. The adult β-globin genes from both parental chromosomes were expressed, but embryonic y-globin genes were not. These results suggest that the expression of adult genes dominates that of embryonic genes.

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