New findings add a surprising twist to the already complex mechanism that determines whether reptile embryos develop to be males or females. An egg-laying lizard found in the hills of southeastern ...

SYDNEY, June 9 (UPI) -- Australian scientists have discovered that for at least one lizard species, whether baby lizards are male or female depends upon the size of the egg. "We were astonished," said ...

Reptile eggs are an interesting area of study, but what makes the distinction between snakes and lizards regarding their eggs ...

For humans, sex is a simple matter of chromosomes: two Xs and we become female; one X and a Y and we develop into males. But things aren’t so straightforward for many lizards – many studies have found ...

Female Sceloporus undulatus producing two clutches of eggs under controlled laboratory conditions increased egg and hatchling size but decreased the number of eggs in the second clutch. The females ...

Whether baby lizards will turn out to be male or female is a more complicated question than scientists would have ever guessed, according to a new report published online on June 4th in Current ...

Whether baby lizards will turn out to be male or female is a more complicated question than scientists would have ever guessed, according to a new report. The study shows that for at least one lizard ...