Chromosomes are the structures on which the genes are carried which, in turn, are the mechanism by which hereditary characteristics are transmitted from parents to off-spring.
(Chromosomes; are; the structures on which the genes are carried which, in turn, are the mechanism) (the genes; are carried; the structures on which the genes are carried which, in turn, are the mechanism) (the structures on which the genes are carried; are; the mechanism by which hereditary characteristics are transmitted from parents to off-spring) (hereditary characteristics; are transmitted; from parents)
Chromosomes the genes the structures on which the genes are carried hereditary characteristics
are are carried are are transmitted
the structures on which the genes are carried which, in turn, are the mechanism
the structures on which the genes are carried which, in turn, are the mechanism
the mechanism by which hereditary characteristics are transmitted from parents to off-spring
from parents