In an Experiment Designed to Analyze the MRNAs Present in a Cell

Multiple Choice

In an experiment designed to analyze the mRNAs present in a cell at a given time in the life cycle,it was found that about 50% of the mRNAs are of one type,less than 20% represent 8 other mRNAs,and the rest consist of several thousand different mRNAs.What does this information indicate?

A) Only the mRNA expressed at the highest level is of any importance to this cell type.
B) The pattern of expression of the low-level mRNAs is what makes the cell type unique.
C) The low-level expressed genes are from organelles.
D) Those genes expressed at low level are likely to be "housekeeping" genes found in many cell types.
E) The genes most specific to this cell type and life stage are the 8 found at an intermediate level.