Line breeding for layer

[nicalandia]

Thank you for your answers.

Now if I understand well the genetic make up of a standard RIR is : eWh/eWh, s+/s+, Mh/Mh, Db/Db, and possible sundry melanisers.
Do you the ones for white leghorn and RIW ? Thanks

R.I.R could also be Co/Co instead of Db...

white leghorns are ER/ER S/S I/I(dominant white) B/B(barred) and some carry the Blue gene(Bl/Bl) Id/Id(dermal inhibitor)

RIW should be eb/eb and recessive white, which means it will hide all other genes