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| Genetics | The study of heredity |
| Gregor Mendel | Called the Father of Genetics and developed the principal of genetics by researching pea plants |
| trait | genetic characteristic of an organism |
| dominant gene | stronger gene or trait in genetics |
| recessive gene | weaker gene or trait in genetics |
| allelle | each form of a gene |
| heterogenous (hybrid) | an organism with two different tenes for a particular trait |
| homologous (purebred) | an organism that has either both dominant or both recessive traits |
| incomplete dominance | condition that occurs when a gene is neither dominant nor recessive |
| meiosis | process that results in cells withonly half the normal number of chromosomes |
| phenotype | visible characteristics of an organism |
| genotype | genetic makeup of an organism |
| Punnett Square | a chart that is used to show the possible gene combinations in a cross between two organisms |
| mutation | a change in the nucleotide-base sequence of a gene or DNA molecule |
| nucleotide | in a nucleic-acid chain, a subunit that consists of a sugar, a phosphate and a nitrogenous base |
| sex linked trait | characteristic passed from parent to child on a sex chromosome |
| DNA | nucleic acid that stores the information needed to build proteins and carries tgenetic information about an organism |
| genetic engineering | process in which genes or parts of DNA are transferred from one organism into another organism |
| heredity | the passing of traits from parent to offspring |
| gene | the basic unit of heredity |
