Which of the Following Would Most Likely Lead to the Development

Multiple Choice

Which of the following would most likely lead to the development of two heads in a Drosophila embryo,one at each end?

A) Injecting Nanos protein into the posterior region of the egg
B) Knocking out the expression of the bicoid gene in the anterior region of the egg
C) Knocking out the expression of the bicoid gene in the posterior region of the egg
D) Injecting the posterior region of the egg with cytoplasm from the anterior region of another wild-type egg
E) Injecting the anterior region of the egg with cytoplasm from the posterior region of another wild-type egg