Three characteristics of identical twins are: 1. Shared genetic makeup. 2. Similar physical appearance. 3. Often have the same blood type.

4. Can have similar personality traits and behaviors.
5. Have a strong bond and connection with each other.
6. Often have the same allergies and health conditions.
7. Have a higher likelihood of developing the same diseases or conditions.

1. Shared genetic makeup
2. Similar physical appearance
3. Often have similar blood type