wraiths over the age of twenty can be trained to hold a pulsar ray togeather instead of firing it. this causes the pulsar ray to drain energy from the wraith itself and literaly scans its d.n.a. and creates a living growing cell inside the ball of energy like an egg. the cell will grow into a wraith (almost like a clone of the parent only it can think for itself and it can grow and develop) the little preborn wraith will absorb the engery from the pulsar ray and use it to grow, untill it uses up all the energy and it will wake up and be able to fight for itself (that and the parent will protect it).
a adult wraith can have 1-5 children usually one or two children is normal...
i hope this answers some questions. :p