n cattle, an autosomal mutation called Dexter produces calves with short stature and short limbs. Embryos that are homozygous for the Dexter mutation have severely stunted development and either spontaneously abort or are stillborn. In addition roan cattle are the heterozygous hybrids of a cross between a white individual and a red individual. What progeny phenotypes do you expect from the cross of a roan Dexter cow to a roan Dexter bull