1.   A second pond at the preserve has been readied for introduction of adult frogs.

2.   Earlier experiments, with frogs, have become a stock story in high school biology, but the experiments never produced cloned adult frogs.

3.   Herpetologists, who specialize in snakes and amphibians, say they seldom see large numbers of deformities, and almost none among the adult frog population.

4.   The introduced trout eat eggs, tadpoles and adult frogs.

5.   The matter rested there, the scientific consensus being that it was impossible to duplicate the feat with genes from adult frogs.

6.   Before the new work, scientists had been able to take tissue from adult frogs and create genetically identical tadpoles.

7.   Scientific consensus was that it would be impossible to duplicate the feat with adult frogs.