Identifying the sex of animals can be difficult at first glance, depending on the species and their appearance. Lizards, ...

Scientists studying the evolution of birth in lizards, from egg-laying to live births, have pinpointed the evolutionary genes from which the species is evolving to 'build' a new mode of reproduction.

Spanish scientists learned that warmer conditions scramble the DNA inheritance patterns in lizards that live in Madagascar and Australia, which makes it harder for these animals to pass healthy genes ...