The gene for snake venom crotamine is most closely related to
A) other snake venom genes.
B) defensin genes, which are used to fight infections.
C) cobra venom factor gene.
D) The evolutionary history for crotamine is not known.

Question

Quizplus · Accepted Answer

Crotamine is most closely related to defensin genes, which are part of the immune system and help fight infections. This relationship suggests that venom genes may have evolved from genes that originally had roles in immunity.

The Gene for Snake Venom Crotamine Is Most Closely Related