24. Eukaryotic cells originally have the same genomes, but the cell have developed and have differentfunctions. The best explanation of this phenomenon is_________.
(A)All cells have housekeeping genes that expressed unequally.
(B) Some cells have differentiated and lost some of the important gene fragments.
(C) Cells with specific function when specific genes expressed differentially in these cells.
(D)Some cells have evolved during the development and have gain new mutations.
(E)Some cells have been affected by the amount of gene copies that they carried for a specific function.