Time required to double or reduce by half the number of gal transcripts during different growth phases.

1Observed rate: rate of mRNA accumulation.2Actural rate: rate of actual transcription.anegative sign (-) represents the time required to reduce the number of gal transcripts by half.1. 观测速率（Observed rate）：mRNA积累速率。 2. 实际速率（Actual rate）：实际转录速率。 负号（-）代表将gal转录本的数量减半所需的时间。