Arnoldo is a botanist studying inheritance in flowers. When he crosses pure breeding red carnations with pure breeding white carnations, the offspring in the f 1 generation have pink flowers. In the f 2 generation, some flowers are red, some flowers are white, and some flowers are pink. When he crosses blue poppies with yellow poppies, all the offspring in the f 1 generation have both blue and yellow petals. In the f 2 generation, some have only blue petals, some have only yellow petals and some have both yellow and blue petals.