| A | B |
| Karyotype | set of photgraphs of chromosomes |
| Sex Chromosome | one of two chromosomes that determine an individual's sex; females have two X chromosomes; males have one X chromosome and one Y chromosome |
| Autosome | autosomal chromosome; chromosome that is not a sex chromosome |
| Pedigree | chart that shows the relationships within a family |
| Polygenic | controlled by many genes |
| Sex-linked gene | gene located on the X or Y chromosome |
| Nondisjunction | error in meiosis in which homologous chromosomes fail to separate |
| DNA fingerprinting | analysis of selections of DNA that have little or no known function, but vary widely from one individual to another, in order to identify individuals |