Do all cells of the body express the same genes?

All cells in the body have the same DNA and the same genes. In organs & tissues the expression changes.

All the cells in a person's body have the same DNA and the same genes. However, the difference between cells in different tissues and organs is that the "expression" of the genes differs between cells.

~Matya

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."

name and explain one of the event that occurs during meiosis that increases the variation in offspring even more than simple reproduction?