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Genetics Vocabulary
Basic Genetics Vocabulary
| Term | Definition |
|---|---|
| Allele | refers to the different versions of a gene |
| Genotype | refers to the genetic makeup of an individual (represented by two letters, e.g. AA, Aa, or aa) |
| Phenotype | refers to the physical traits of an organism (e.g., blue eyes, black hair) |
| Homozygous | a condition in which the two alleles for a particular trait are the same (e.g., BB or bb) |
| Heterozygous | a condition in which the two alleles for a particular trait are different (e.g., Bb) |
| Dominant | the trait that is always visible and expressed when present |
| Recessive | the trait that is only visible and expressed when present in the homozygous form |