| A | B |
|---|
| Karyotype | a set of photographs of chromosomes grouped in order in pairs |
| 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 | the autosomal chromosome; chromosome that is not a sex chromosome |
| Pedigree | a chart that shows the relationships within a family |
| Sex-Linked Gene | a gene located on the X or Y chromosome |
| Nondisjunction | an error in meiosis in which homologous chromosomes fail to separate |
| DNA fingerprinting | the analysis of sections of DNA that have little or no known function, but vary widely from one individual to another, in order to identify individuals |
| Polyploidy | condition in which an organism has an extra set of chromosomes |
