All the organ systems are laid down, at least in rudimentary form, and the embryo looks distinctly human by the __________ of embryonic development.
A) first week
B) second week
C) fourth week
D) eighth week
E) twelfth week
Answer: D
All the organ systems are laid down, at least in rudimentary form, and the embryo looks distinctly human by the __________ of embryonic development.
A) first week
B) second week
C) fourth week
D) eighth week
E) twelfth week
Answer: D