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| Question | Answer |
| Alleles | The different forms of a gene that are located on specific positions of the chromosome. |
| Codominance | A condition in which neither of the two alleles of a gene is dominant or recessive. |
| Dominant | An allele whose trait always shows up in the organism where the allele is present |
| DNA | Deoxyribonucleic acid: The genetic material that carries information about an organism and is passed from parent to offspring. |
| Gene | A segment of DNA on a chromosome that codes for a specific trait. |
| Genetics | The scientific study of heredity. |
| Genotype | An organism's genetic make-up, or allele combinations. |
| Chromosome | A threadlike strand of DNA that carries the genes determining heredity. |
| Heredity | The passing of traits from parents to offspring |
| Heterozygous | Having two different alleles for a trait. |
| Homozygous | Having two identical alleles for a trait. |
| Hybrid | An organism that is heterozygous for a particular trait; An organism that has two different alleles for a trait. |
| Meiosis | The process that occurs in the formation of sex cells (sperm and egg) by which the number of chromosomes is reduced by half. |
| Phenotype | An organism's physical appearance, or visible traits. |
| Purebred | An organism that always produces offspring with the same form of the trait as the parent. |
| Recessive | An allele that is masked when a dominant allele is present. |
| Trait | A characteristic that an organism can pass on to its offspring through its genes. |
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