| A | B |
| Allele | an alternative form of a gene |
| Complete Dominance | an inheritance relationship in which one allele is completely dominant over the other; both Bb and BB have the same phenotype |
| Dihybrid Cross | A cross between individuals that involves the pairing of contrasting traits |
| Dominant | Referring to an allele that masks the presence of another allele for the same characteristic |
| Codominance | an inheritance relationship in which niether of two alleles of the same gene totally masks the other |
| F1 generation | the offspring of cross-pollinated P1 generation plants |
| F2 generation | The offspring of self-pollinated F1 generation plants |
| Genetics | the field of biology devoted to inderstanding how traits are passed from parents to offspring |
| Genotype | the genetic makeup of an organism |
| Heredity | the transmission of traits from parents to their offspring |
| Heterozygous | referring to a gene pair in which the two alleles do not code for the same trait |
| Homozygous | referring to a gene pair in which the two alleles code for the same trait |
| Incomplete donminance | An inheritance relationship that occurs when both alleles influence the phenotype |
| Phenotype | the external appearance of an organism that is determined by the individuals' genotype |
| Punnett Square | A model used to establish the probabilities of the results of a genetic cross |
| Recessive | Reffering to an allele that is masked by the presence of another allele for the same charateristic |
| Trait | in genetics, a category within which alternate characteristics, such as height and eye color, can be observed |
| Adenine | A nitrogen-containing base that is a component of a nucleotide |
| Anticodon | A region of tRNA consisting of three bases complementary |