These traits are all physical traits which have observable characteristics, and which have been inherited from one or both of their parents.
(These traits; are; physical traits which have observable characteristics, and which have been inherited from one or both of their parents) (physical traits which have observable characteristics; have been inherited; from one or both of their parents)
These traits physical traits which have observable characteristics
are have been inherited
physical traits which have observable characteristics, and which have been inherited from one or both of their parents
from one or both of their parents