Changes in DNA (mutations) occur spontaneously at low rates, but can affect the organism in many ways or may go unnoticed.
- Human Body
- The human body is unique in its heredity, body systems and development, and can be affected by the environment.
Students demonstrate their understanding of Human Heredity by
All body cells have identical genetic information, but its expression may be very different from one cell to another due to the instructions given to different types of cells.