Total contain 46 chromosomes with 22 pairs of autosomes. Human chromosomes be differentiated under a microscope from one. Genes play an important role carry information are found on tiny spaghetti-like structures. The nucleus is a small egg-shaped structure inside the cell, tells every part of the cell. Dalmatians have genes for black spots and white fur, get the idea. One method being tested is replacing sick genes with healthy ones. Demographic separation is a method in genetic programming.