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Genes
Term | Definition |
---|---|
Genetics | Scientific study of hereditary |
Trait | Characteristic that varies from one individual to another |
Alleles | Different possibilities for each trait (each trait as two or more’) |
Segregation | Two alleles for each trait separate when gamates form. |
Independent assortment | Genes for different traits are inherited independently |
Dominant | Masks the other trait, respresnted by capital |
Recessive | Will only happen if dominant allele is not present. Lower case letter |
Genotype | The genetic makeup of organism. Allele combo organism has. |
Phenotype | Physical characteristic of organism, way it looks |
Homozygous | Organism that has two identical alleles for trait |
Heterozygous | Organism that has two different alleles for the same trait |
Punnett square | Diagram shows gene combos from genetic crossing Used to calculate probability of trait |
Incomplete dominance | One alleles is not completely dominant |
Codminanace | Both alleles contribute to the phenotype of organism |
Multiple alleles | Three or more alleles in same gene |
Examples of multiple alleles | Coat color, blood type and hair color. |
Polygenic trait | Trait by two or more genes |