A researcher is using adult stem cells and comparing them to other adult cells from the same tissue. Which of the following is a likely finding?
A) The nonstem cells have lost the promoters for more genes.
B) The cells from the two sources exhibit different patterns of DNA methylation.
C) Adult stem cells have more DNA nucleotides than their counterparts.
D) The two kinds of cells have virtually identical gene expression patterns in microarrays.
E) The nonstem cells have fewer repressed genes.

Why is answer A), The nonstem cells have lost the promoters for more genes, INCORRECT

and

Why is answer B), The cells from the two sources exhibit different patterns of DNA methylation, CORRECT?