为什么在TRIZOL 法抽提核酸时DNA被分配到有机相，而RNA留在水相？

I think DNA is the bit in the interphase (the white stuff) since it's really large molecules.

At acid PH, DNA in the sample is protonated, neutralizing the charge and causing it to partition in to the organic phase. RNA remains charged and partitions into the aqueous phase.