I know of no attempt to redefine the species in these cases. Sometimes
fertility is a matter of degree. Since 1527 60 foals have been born to
female mules (Lorraine Travis, The Mule, London:J. A. Allen, 1990). Some
of these births have been under controlled circumstances at Texas A&M.
Are the donke and horse the same species? No, their fertility is too rare
>In his testimony before the Arkansas trial that ashcanned Arkansas'
>balanced treatment law, Wayne Frair, a creationist who studies turtles,
>said he believed that "kinds" might be orders in some cases. I presume
> he had interbreeding in mind too. I have no idea whether he had any
>specific cases to trot out, but it might be worthwhile to check his pubs.
For turtle interbreeding see S. A. Karl et al "Hybridization among the
ancient mariners: ..." Jour. of Heredity 1995 86(4), pp262-268
glenn
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