Imagine a world where mothers don’t need fathers to create life—a world where females alone carry the spark of the next ...

The lizards are all female and parthenogenetic ... cloning—that occurs in asexual reproduction. It’s a genetic-diversity advantage that today’s females still enjoy and propagate.

The Komodo dragon, the largest species of lizard now alive, can grow to 10 feet long and nearly 200 pounds. A muscular carnivore armed with sharp teeth, Varanus komodoensis dines on prey as large ...