The expressions \(2n - 1\) and \(2n + 1\) can represent odd numbers, as an odd number is one less, or one more than an even number. Example Prove that whenever two even numbers are added, the ...

For example, Himalayan rabbits carry the C gene, which is required for the development of pigments in the fur, skin, and eyes, and whose expression is regulated by temperature (Sturtevant, 1913).