Threshold of Twilight
When Dracart, Wyrllish and Harkiel created the Draconians, no thought was given to the long-term ramifications of their experiments. Given the fact that they were created to serve the role of expendable shock troops, and were never intended to reproduce, such short-sightedness is unsurprising to say the least. In discovering the female eggs which allowed their race to reproduce, previously recessive traits have begun manifesting themselves in their offspring. When these recessive traits manifest in an individual, they come to be known as Dragonborn.
As Wingless Draconians, Dragonborn typically have the same coloration and features of their Draconian parents, however in place of the more common (and spectacular) Death Throws, these Draconians manifest the recessive breath weapons of their draconic forefathers. While it is uncommon, it is not unheard of for some Dragonborn (especially Sivak Dragonborn) to grow wings later in life, as previously dormant genes become active.
Some Draconians hail Dragonborn as the evolution of their species. Others see them as throwbacks to the mighty wyrms to which the Draconians are decended, others envy them for their similarity to true dragons, while others see them no differently than they do other Draconian species. Regardless of how any specific Draconian feels about Dragonborn, Dragonborn are afforded equal status in Draconian society, and experience little to no prejudice as a result. As a race with few females, Draconians cannot afford to be picky with their offspring.