Bearded dragons are famous for their ability to change sex depending on heat and genes. Two new genome projects have revealed the likely master gene, Amh, behind this switch — finally solving a reptile mystery that has baffled scientists for years. Credit: Shutterstock Scientists have finally cracked one of the strangest mysteries in reptile biology: how bearded dragons decide their sex. Breakthrough Genomes Reveal Bearded Dragon’s Secrets Two separate research teams have now released near-complete reference genomes of the central bearded dragon (Pogona vitticeps), a lizard species that ranges widely across central eastern Australia and is also a favorite pet...