The term GENE can be found in two crossword solutions, POOL (4 letters) and MAP (3 letters). A gene is a unit of heredity that is passed from parent to offspring and is made up of DNA. Genes are responsible for the physical characteristics of an organism and can be found in the nucleus of cells. The POOL solution refers to a gene POOL, which is the total genetic material of a species or population. The MAP solution refers to a genetic MAP, which is a diagram that shows the location of genes on a chromosome.