The larvae of some insects are merely small versions of the adult, whereas the larvae of other insects look completely different from adults, eat different foods, and may live in different habitats. Which of the following most directly favors the evolution of the latter, more radical, kind of metamorphosis?
A) natural selection of sexually immature forms of insects
B) changes in the homeobox genes governing early development
C) the evolution of meiosis
D) the development of an oxidizing atmosphere on Earth
E) the origin of a brain

Question

Quizplus · Accepted Answer

Changes in the homeobox genes governing early development are the most directly related to the evolution of radical metamorphosis in insects. This is because homeobox genes encode transcription factors that regulate gene expression during development, and changes in these genes can lead to drastic alterations in body plans and developmental pathways.

The Larvae of Some Insects Are Merely Small Versions of the Adult