Breeding black and red Hereford

[sassafras manor]

With a heterozygous black bull and red cows, will all of the offspring be red? What about a homozygous black bull with red cows, will all of those calves be black? Then I assume breeding a homozygous black bull to the offspring of a homozygous black/red cow? Will that be an assortment of black and red calves?

 

[GoWyo]

Black is dominant and red is recessive. Hetero black bull on red cow will throw 50% red and on hetero black cow 25% red. Homo black bull or cow will be 100% black. Look up the old Punnett square from biology and you can diagram it out how the percentages fall.