Line or in breeding will bring out the recessive genes. So if you see a
horse with a lot of the same blood and the horse is proper and to your
liking, you can bet that the horse carries the proper and correct
geneotype, and carries no "surprises". In and line breeding WILL
accentuate the positive AND the negative. So, in a lot of close-breeding
cases, "what you see, is what you get"
Lauren