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.

Crotamine

A toxic peptide found in the venom of certain South American rattlesnakes, known for its antimicrobial and pain-inducing properties.

Defensin Genes

Genes that encode for defensins, which are small cysteine-rich cationic proteins involved in the innate immune system by providing a first line of defense against pathogens.