The development of eyes has been intensively studied.Eyes of vertebrates and insects are
A)analogous (homoplastic),not homologous,yet the same Pax6 gene initiates development.
B)homologous,not analogous (homoplastic),yet the same Pax6 gene initiates development.
C)analogous (homoplastic),not homologous,and development is initiated by two different genes,Pax6 and Pax7.
D)homologous,not analogous (homoplastic),and development is initiated by two different genes,Pax6 and Pax7.
E)completely unrelated,and development is initiated by a whole suite of different genes in different species.

Question

Quizplus · Accepted Answer

The eyes of vertebrates and insects are analogous, meaning they evolved independently and are not derived from a common ancestor, yet the Pax6 gene is a conserved genetic element that initiates eye development in both groups.

The Development of Eyes Has Been Intensively Studied