Dachshund colour genetics


New Member
I’m looking for some info on coat colour genes.
My girl is Black and Tan, her parents were Black and Tan and shaded red.
From the info I can find online the pups from her parents could of been
BE = red? Or Be = Black and Tan??
I can’t find much info on the recessive e gene.
I thought if they carried any red gene they would be red.
I’ve mated my girl with my choc and tan boy and she’s had 5 nice healthy pups.
I assumed my girl was BB as if she had any red gene she would be red, but one of the pups is looking choc/red??
There only 2 days old so it’s quite hard to tell yet.