A recent genomic analysis of some of the world’s most venomous snakes has revealed an unexpected link between venom evolution and genetic neutrality. Researchers at the University of Portsmouth, UK, have studied the genomes of the saw-scaled viper, puff adder, and Egyptian cobra, and uncovered a connection between venom expression and the absence of genetic variation. This suggests that venom expression is driven by neutral evolutionary processes, rather than being shaped by natural selection. This research provides new insight into venom evolution and could help inform conservation efforts for these species.

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source: Phys.org