He says they are part of the genome of the last common ancestor of all birds,frogs, dinosaurs and mammals.

VOA: special.2010.06.29

As a result, they used the frogs in fast-acting, low-cost pregnancy tests for women during the nineteen-forties and fifties.

VOA: special.2010.06.29

Scientists also studied eggs from the frogs to learn about the development of fertilized eggs into embryos.

VOA: special.2010.06.29

We will also tell about a project that scientists hope will protect an endangered species of frogs.

VOA: special.2010.06.29

And,Mister Hellsten says, genetic changes are rare for frogs, humans and most organisms.

VOA: special.2010.06.29

"To mention an example, we have found that about eighty percent of all genes that are known to be associated with human disease have a counterpart in frogs.

VOA: special.2010.06.29

Tropicalis is among the smaller frogs in the Xenopus group.

VOA: special.2010.06.29

There are about twenty different kinds of Xenopus frogs.

VOA: special.2010.06.29

and Smiley and the other man touched the frogs.

VOA: special.2009.08.29

"Maybe you understand frogs and maybe you don't.

VOA: special.2009.08.29

It tells about a jumping competition among frogs.

VOA: special.2010.03.21