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Heredity
Term | Definition |
---|---|
Gregor Mendel | The monk who studied pea plants and researched heredity and genetic traits. |
Heredity | The passing of inherited characteristics from generation to generation. |
DNA | A chemical code inside each cell that determines a persons traits. A-T/C-G |
DominantTrait | A genetic trait that appears in the first generation (child) and covers up the recessive trait. |
Recessive Trait | A weaker trait, covered up by a dominant trait in the first generation. It shows up in the second (grandchild) or later generation. |
Gene | One set of instructions for an inherited trait on the chromosomes. |
Alleles | A different form of the same gene, (ex. hair color) that controls an inherited trait. |
Genotype | The genes and inherited instructions for organism. Not all can be seen. |
Phenotype | The physical inherited characteristics that CAN be seen in an organism, such as hair, eye and skin color. |
Punnett Square | A chart that can predict all the possible combinations of offspring from particular parents. |
Predigree Chart | A diagram used to chase inherited traits through man generations of a family. |
Homozygous Traits | Inheriting two of the same genes fr a genetic trait (purebred) ex.: BB for brown eyes or bb for blue. |
Hererozygous Traits | Inheriting two DIFFERENT genes for a genetic trait. (hybrid) ex.: Bb for brown eyes |