In captivity, a Bottlenose Dolphin and a Rough-toothed Dolphin produced hybrid offspring.

If hybrid offspring are either sterile or less-fit than non-hybrid offspring, mating between members of two different species will be selected against.

Asian black bears are reproductively compatible with several other bear species, and have on occasion produced hybrid offspring.

And hybrid offspring of these uninfected wasps are fertile and healthy - there are none of the problems that would crop up if the genes were diverging.

A. The two most distantly related species to produce hybrid offspring are unknown, according to Dr. Charles Remington, a professor of biology at Yale University.

If seeds result, they will produce hybrid offspring exhibiting some characteris- tics from each parent.

Animals of the Equus genus can have hybrid offspring, but they are usually sterile.

In captivity, a bottlenose and a rough-toothed dolphin produced hybrid offspring.

Transgressive segregation attempts to explain situations when the converse is true, hybrid offspring that appear to have overstated traits when compared to the parental line.

These hybrid offspring, the thinking went, would possess the best qualities of their parents, and more.