What is Pure-bred?
'''Pure-bred''' organisms are [[homozygous]] for the desired characteristics that a breeder wants. The offspring of a pure bred organism will always show the desired [[phenotype]]. The type is often got by [[inbreeding]]. Standard laboratory white [[rats]] are so [[genetically]] similar that they will accept [[skin graft]]s from other rats of the type. See [[strain (biology)]] for a fuller discussion. {{biology-stub}} [[Category:Classical genetics]]