Check out this drone with a white-eyed mutation. This is due to recessive genes. This poor guy will never go out and mate. He is blind. All honeybee drones develop from unfertilized eggs. Because of this, he has only one set of chromosomes. A Chromosome is a threadlike structure of nucleic acids and protein found in the nucleus of most living cells, carrying the genetic information in the form of genes. With this one set, recessive genes can be expressed more readily without being overridden by a corresponding dominant gene.