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Gregor Mendel the monk who studied pea plants and research heredity and genetic traits
heredity the passing of inherited characteristic from generation to generation
DNA the chemical code inside each cell that determines a person's traits A-T C-G
Dominate traits A genetic trait that appears in the first generation (child) and covers up the recessive
Recessive traits A weaker trait covered up by a dominate trait in the first generation. It show up in 2nd (grandchild) or later generations
gene One set of instructions an inherited trait on the chromosomes
alleles a different form of the same gene, (ex. hair color) that controls an inherited traits.
Genotype the genes and inherited instruction for organism. Not all can be seen
Phenotype the physical inherited characteristics that can be seen in a organism, such as hair, eye, skin color.
punnet square a chart that can predict all the possible combinations of offspring from particular parents
pedigree chart a diagram used to trace inherited traits throug 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) exammples: BB for brown eyes.



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