Question: what the difference between homozygous dominant and recessive?
Answer: Being homozygous means that both copies you have are the same. ... So, a homozygous dominant plant has the two T versions (written "TT"), and a homozygous recessive plant has the two t versions (written "tt"). Heterozygous is one tall and one short: Tt. Now, your question is on how are the genes different.