This is true because genes, which are hereditary units, are transmitted from parents to children.
(This; is; true; because genes, which are hereditary units, are transmitted from parents to children) (genes; are; hereditary units) (genes, which are hereditary units; are transmitted; from parents)
This genes genes, which are hereditary units
is are are transmitted
true because genes, which are hereditary units, are transmitted from parents to children
hereditary units
from parents