What happens when Hox genes for the head are turned on in the head
segments?
A. Mutations to genes in this segment will cause thorax structures to
form on the head.
B. The head segment will develop all of the structures needed for the
fruit fly's body plan.
C. Transcription of proteins needed for developing the body parts of
the head will be delayed.
D. Transcription factors will be produced to regulate genes
associated with forming head structures.
