| A | B |
|---|
| Technology for changing a gene | genetic engineering |
| gene located on the X chromosome | sex-linked gene |
| the allele that is hidden | recessive |
| a tool for rdicting possible offspring | Punnett Square |
| different form of the same gene | allele |
| when both alleles are expressed in offspring | incomplete dominance |
| the study of heredity | genetics |
| when a group of gene pairs acts together | polygenic inheritance |
| tool for tracing a trait through a family | pedigree |
| all the genes in a species | genome |
| organisms with two different alleles for a trait | heterozygous |
| genetic makeup of an organism | genotype |
| physical appearance of an organism | phenotype |
| helps determine the chance that something will occur | probability |
| when more than two allels control a trait | multiple alleles |
| organism that always produces the sme traits in its offspring | purebred |
| when there are two alleles that are exactly the same | homozygous |
| passing on traits from parents to offspring | heredity |
| a factor that covers up another factor | dominant factor |
| a factor that seems to disappear | recessive factor |
