“外显率”与“表现度”的根本区别在于前者阐明了基因表达与否,是个“质”的问题;而后者要说明的是在表达前提下的表现程度如何,是个“量”的问题。()
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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