| A | B |
| Autosome | chromosome that is not a sex chromosome |
| carrier | individual heterozybous for a recessive disorder such as cystic fibrosis |
| codominance | complex inheritance pattern that occurs when neither allele s dominant and both are expressed |
| epistasis | interaction between alleles in which one allele hides the effects of another |
| incomplete dominance | complex inheritance pattern in which the heterozygous phenotype is intermediatee |
| karotype | micrograph in which the pairs of homologous chromosomes are arranged in decreasing size |
| multiple alleles | having more than 2 alleles for a specific trait |
| nondisjunction | cell divisioin in which the sister chromatids do not separate correctly |
| pedigree | diagrammed family history that is used to study inheritance patterns of a trait |
| polygenic trait | characteristic such as eye color or skin colore that results from the interaction of multiple gene pairs |
| sex-linked traits | characterstics such as red-green color blindness, controlled by genes on the X chromosome |