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Heredity

TermDefinition
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 The chemical code inside each cell that determines a persons traits. A-T C-G
Dominate Trait 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 2nd (grandchild) or later generation.
Gene One set of instructions for an inherited trait on the chromosomes.
Alleles A different for 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 a organism, such as hair, eye and skin color.
Punnett Square A chart that can predict all the possible combinations of offspring from particular parents.
Pedigree Chart A diagram used to trace inherited traits through many generations of a family.
Homozygous Traits Inheriting 2 of the SAME genes for a genetic trait (Purebred) Example: BB for brown eyes or bb for blue eyes.
Heterozygous Traits Inheriting 2 DIFFERENT genes for a genetic trait ( hybrid) examples: Bb for brown eyes.
Created by: Brielle A Smith
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