A researcher discovers that some of the mice she studies show gene-expression problems; more research reveals that they are expressing both copies of imprinted genes of which only one copy (either the maternal or paternal) should be expressed.What regulatory process is most likely in error in these mice?

MCQs on the cell and its structures, including molecular compounds, structural features, and organelles including the nucleus, cytoskeleton, and extracellular matrix. Particular emphasis on transport mechanisms and membrane trafficking, cellular signaling, the cell cycle including mitosis and meiosis, and gene expression.