This statement is not entirely accurate. While it is true that many traits are influenced by multiple genes, and individuals typically have two copies of each gene (one inherited from each parent), the genes may not always be exactly alike. In fact, genes can exist in different forms or variants, known as alleles. These alleles can be either identical (homozygous) or different (heterozygous) for a specific trait.
In some cases, individuals may inherit two identical alleles for a particular gene (homozygous dominant or homozygous recessive), and in other cases, they may inherit two different alleles (heterozygous). The combination of alleles an individual inherits can determine their specific trait expression.
So, while individuals typically inherit two genes for each trait, those genes can be identical or different, and the combination of alleles can influence the expression of the trait. This is the basis of Mendelian genetics and the concept of dominant and recessive alleles.