From crossing a hornless bull with horned cows, 17 hornless calves and 21 horned calves were obtained. All ancestors of cows had horns.

From crossing a hornless bull with horned cows, 17 hornless calves and 21 horned calves were obtained. All ancestors of cows had horns.
a) What is the dominant feature?
b) Describe the bull’s genotype in words.
c) Can hornless descendants of this bull have horned calves?
d) Can a hornless calf be born from a horned cow and this bull?
e) What can be the phenotype splitting in the offspring from the crossing of a hornless cow and a horned bull?

Answer: hornlessness / heterozygote / yes / no / 1: 1 or 0.

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