There are two genes that decide each of your traits, and those two genes are always exactly alike.

I'm sorry, but the statement you provided is incorrect. In reality, each trait in an organism is determined by multiple genes, not just two. Furthermore, the genes responsible for a particular trait may not be identical; they can have different variations, known as alleles. These variations contribute to the diversity seen in traits among individuals of the same species. Additionally, traits can also be influenced by environmental factors, which further complicates the determination of traits solely based on genes.