Which statement about thomas hunt morgan’s conclusion is true? 1.) traits like white eye color in fruit flies are recessive traits that are linked to the y chromosome. 2.) traits like white eye color in fruit flies must be linked to both x and y chromosomes to be expressed. 3.) traits like white eye color in fruit flies are dominant traits that are linked to x chromosomes. 4.) traits like white eye color in fruit flies are linked to the x chromosome.