Question

A1a2 heterzygous animal produces which tyoe of milk

Answer 1

A cow with the homozygous genotype A1A1 produces pure A1 milk, while A2A2 produces pure A2. An individual which is heterozygous for this gene, A1A2, will give milk that contains a mix of the two forms of beta casein. In other words, this is an example of incomplete dominance.