SACs are those genes with expression up-regulated during leaf senescence. Class I SACs are expressed only during senescence (senescence-specific). Class II SAGs have a basal level of expression during early leaf development, but this level increases during senescence.
Which Sample Rate to use. 44.1 kHz. 44.1 kHz (44100 Hz) is the sampling rate of audio CDs giving a 20 kHz maximum frequency. 20 kHz is the highest frequency generally audible by humans, so making 44.1 kHz the logical choice for most audio material.
To configure Audacity for this: 1  At the bottom left of the Audacity window, set the Project Rate to 44100 Hz. 2  Some CD burning software require you to have a stereo track. 3  Click and choose WAV (Microsoft) signed 16-bit PCM in the Save as type box.