Female Drosophila That Are Homozygous for a Mutant Form of the Bicoid

Multiple Choice

Female Drosophila that are homozygous for a mutant form of the bicoid maternal effect gene produce eggs that,when fertilized,develop into larvae with no head or thorax.Which procedure would most likely lead to restoration of normal development in one of these mutant eggs?

A) Adding cytoplasm from the anterior end of a normal egg to the anterior end of the mutant egg
B) Adding cytoplasm from the posterior end of a normal egg to the posterior end of the mutant egg
C) Disrupting expression of the mutant bicoid gene in the egg
D) Forcing expression of the nanos gene in the egg
E) Knocking out expression of the nanos gene in the egg