If You Could Mark the Ectoderm of a Mouse Embryo

Multiple Choice

If you could mark the ectoderm of a mouse embryo so that all tissues and organs descended from ectoderm were easily identifiable, where would you expect to find the marker?

A) skeletal muscles and dermis
B) cardiovascular and reproductive systems
C) nervous system and epidermis
D) lining of the digestive and respiratory tracts
E) urinary bladder and its lining