Catherine Delphia News Today

© IStock/W1ZZARD Liger cub and other hybrid animals are more common than once thought. In the 20th century, animals such as mules and ligers that had parents of different species were considered biological flukes, but genetic sequencing is beginning to unravel the critical role of hybridization in evolution. The whales teeth were what had caught molecular ecologist Eline Lorenzens attention. Of the 18 chompers lining the front of the skulls mouth, some were twisted, not unlike a narwhals tusk...