A couple of simple rules
All Dachshunds have 50% of their genes from their Dam, and 50% of their genes from their Sire. This includes the many genes that influence coat colour, length, texture and pattern, as well as for immunity, conformation and every other function.
When written, capitalisation is used for the dominant genes.
Colour, coat and pattern are very simple and FUN. And necessary for the breeder to understand in the quest to produce the healthiest puppies we can.
Perhaps the simplest is coat type. Especially in the UK as we cannot register puppies from cross coat matings. However, recessive longs and smooths do appear from time to time
With a little understanding of colours and how they are inherited, we can breed to avoid those colours and combinations that aren't acceptable
Patterns independently overlay the colour placements to give us variations.
Brindle, Dapple, Piebald
The Cord1 mutation and other eye considerations.
PRA, Glaucoma, Cataract, Distichiasis
Blue and Isabella and the genetic problems they face