What is conversed in a physical change

The same amount of matter exists before and after the change—none is created or destroyed. This concept is called the Law of Conservation of Mass. In a physical change, a substance's physical properties may change, but its chemical makeup does not.

Explanation:

this protocol provides a detailed procedure for co-immunoprecipitation (co-ip) to identify protein–protein interactions.

some inherited genetic mutations can be good for the offspring, so the answer is different genetic mutations cause many forms of cancer.