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Genetics Vocabulary
Term | Definition |
---|---|
Gene | Section of DNA that codes for a specific trait. They are carried from parents to offspring on chromosomes. |
Allele | Different forms of a gene, or a piece of genetic information inherited from each parent. |
Dominant Allele | One whose trait always shows up in the organism when the allele is present. Example: BB |
Recessive Allele | Is masked whenever the dominant allele is present. Example: bb |
Geneotype | The genetic makeup |
Phenotype | The physical appearance |
Heterozygous/Hybrid | A combination of a dominant allele and a recessive allele, the dominant coming first. Example: Bb |
Homozygous/Purebred | Has identical alleles on both sides. Example: BB |
Codominant | 50% chance of this trait. |