| A | B |
| heredity | passing traits from parent to offspring |
| alleles | different forms a gene may have for a trait |
| genetics | study of how a gene affects the trait of an offspring |
| domiant | the form of a trait that apears to dominate or mask another form of the same trait |
| ressive | the form of a trait that appears least often |
| punnett square | a tool that shows how genes can combine, used to predict results in genetics |
| genotype | the combination of dominate or recessive genes present in that organism |
| homozygous | an organism that has two identical alleles for a trait |
| heterozygous | an organism that has two different alleles for that trait |
| phenotype | the physical trait in an organism resulting in its genetic makeup |
| incompete dominance | a condition that exist whenboth alleles for a trait are expressed |
| multiple alleles | having more than one trait to control a trait |
| polygentic inheitance | group of gene pairs toproduce a trait |
| sex-linked gene | a gene that is located on a sex cromosome |
| pedigree | a diagram that traces the historyof a trait in a family |
| genetic engenering | experimental methods for altering genes in ofspring to produce desirable traits or elimenate undesirable traits |
| genome | a map of the location of indivual genes on every cromosome of an individual |