If all your cells come from the original zygote that formed you, why aren’t all of them identical to each other?

Cells are genetically programmed to have different functions throughout the body. If each and every cell was the same, you, as a human, would not be alive. Given that some cells serve different purposes than others, they need to be built to serve those purposes.

Security

Space Exploration

Measurement

Sterilization/Irradiation

Carbon Dating

Promoting Genetic Mutation

Clean Air

Smoke Detectors

nuclear medication

x-rays

Explanation: