click below
click below
Normal Size Small Size show me how
Genetics #2
Incomplete dominance, codominance, genetic disorders, sex-linked traits
| Term | Definition |
|---|---|
| Incomplete Dominance | when two organisms are crossed with two different phenotypes that produce offspring with a blended phenotype of the parents. (Red flower x white flower = pink flower) |
| Name two examples of incomplete dominance | Four o'clock flowers and Andalusian fowl |
| Codominance | when two organisms are crossed with two different phenotypes that produce offspring with both phenotypes present. (Red cow x white cow = red and white cow -roan cattle) |
| Name four examples of codominance | Tabby cat, Roan cattle, Husky's eyes, Erminette chickens |
| Genetic disorder | an abnormal condition that a person inherits through genes or chromosomes |
| Mutation | changes in a person's DNA |
| Cystic Fibrosis | a genetic disorder in which the body produces abnormally thick mucus in the lungs and intestines. |
| Sickle-cell Anemia | a genetic disorder caused by abnormally shaped blood cells that make it difficult for the blood cells to carry oxygen |
| Hemophilia | a genetic disorder in which the blood clots very slowly or not at all |
| Down Syndrome | a genetic disorder that is due to an extra copy of chromosome 21 |
| Pedigree | a diagram or chart that shows how traits are passed from one generation to the next in a family |
| Meiosis | the double cell division to produce sex cells (23 chromosomes each) |