Figure 1.
Time course of maternal transcript degradation in activated, unfertilized eggs. (A) The same Northern blot probed for rpA1 (stable) and string, Hsp83, or nanos (unstable) transcripts. (B) Quantitative analysis of the time course of Hsp83 transcript degradation. The points represent the ratio of Hsp83 transcripts to stable rpA1 transcripts relative to the initial (0–0.5 h) concentration. It can be seen that more than 95% of the Hsp83 transcripts have disappeared by 3.0 to 3.5 h after egg activation. Data from two independent experiments are presented. Half-hour time windows are shown. See ref. 9 for details.