How do you tell if a dog is heterozygous or homozygous?

Question

How do you tell if a dog is heterozygous or homozygous?

Answer 1

Do a karyotype to look at its chromosomes.

Otherwise, you can't tell by looking at its phenotype unless you're looking for homozygous recessive

Answer 2

Every dog is both heterozyogous and homozygous.  These terms refer to whether you have two copies of a gene that are the same alleles or different alleles.  Since a dog has thousands of genes, some will most certainly be heterozygous and some will be homozygous.

Answer 3

do you mean its genes if yes take a sample. if you mean a homesexual dog then buy a dog of the same s*x, and see what happens