Which statement about fruit fly development is false?
◦ One of the earliest development events is the determination of the head and tail ends of the egg.
◦ The location of the head and tail ends of the egg is primarily determined by the location of sperm entry during fertilization.
◦ Cascades of gene expression routinely direct fruit fly development.
◦ Homeotic genes regulate batteries of other genes that direct the anatomical identity of body parts.