Explain why, even though the DNA sequence/genome of body cells are the same, the cells can look much different as a result of cellular differentiation (e.g., compare a skin cell to a muscle cell).
A) Differentiation involves changes in DNA sequence
B) Differentiation results in activation of different genes in different cell types
C) Differentiation alters the number of chromosomes in each cell
D) Differentiation causes cells to undergo mitosis at different rates
