Which Statement Is a General Principle of Evolutionary Developmental Biology

Multiple Choice

Which statement is a general principle of evolutionary developmental biology (evo-devo) ?

A) Each group of animals is distinct in the regulatory molecules controlling the animals' development.
B) Embryonic development is protected from environmental influences.
C) A change in the timing of expression of particular genes during development is always lethal and is therefore not a mechanism for evolutionary change.
D) A change in the location of expression of particular genes during development can be a mechanism for evolutionary change.
E) Evolution does not act at the level of the embryo.