Does a brain cell contain more DNA than a muscle cell?

Answer 1

No, all cells, except red blood cells have a full DNA complement. The expression varies, though.

Answer 2

Actually, it could almost be a trick question. In terms of nuclear DNA, a muscle cell and a brain cell would have the same amount because they have identical chromosomes.

But...if you consider than mitochondria have their own individual chromosomes separate from the total cell chromosomes, the cell with more mitochondria would have more total DNA. I suspect that would be the muscle cell, as it is more metabolically active.