Larval flies (maggots)express the Ubx gene in all their segments and thereby lack appendages.If this same gene continued to be expressed throughout subsequent developmental stages,except in the head region,and if the result was a fit,sexually mature organism that still strongly resembled a maggot,this would be an example of
A)exaptation.
B)homochrony.
C)paedomorphosis.
D)adaptive radiation.

Question

Quizplus · Accepted Answer

This scenario describes paedomorphosis, which occurs when an organism retains juvenile features into adulthood. In this case, the continued expression of the Ubx gene would result in an adult fly that still lacks appendages and strongly resembles a maggot (its juvenile form).

Larval Flies (Maggots)express the Ubx Gene in All Their Segments