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| Genetics | Biological science that deals with transmission of chaecteristics from parent to offspring |
| Medelian Genetics | Term used to describe the basic concept of heredity that was discovered by Mendel. |
| Heredity | The transmission or passing on of charecteristics from parent to offspring through Genes. |
| Genes | The basic units of heredity that come in pairs |
| Chromosomes | Carry genetic material, ie genes |
| Alleles | A differnt form of a specific gene |
| Dominant Gene | is the allele of the gene that is expressed over another allele |
| Recessive Gene | The allele of a gene that is not expressed over another gene |
| Phenotype | how somthing looks |
| Genotype | the actual genes that an individual carries |
| Homozygous | Two members of a gene pair are alike |
| Heterozygous | Two members of a gene pair are not alike |
| Hemizygous | A gene is only present once in a genotype |
| Mutation | a change in the gene |
| Transgenic Mice | Mice that received a gene from somewhere else |
| Knock-Out Mice | Mice that have been treated to block the function of a specific gene |
| In-cross | breeding together a male and a female with the same Genotype |
| Back-Cross Mating | Mating together a Hetrozygous and a individual homozygous for one of the parent types |
| Inter-Cross Mating | Breeding together of two identical F1 heterozyogous mice |
| Cross-Mating | breeding two unlike homozygous individuals |
| Punnet Square | A visual tool used to predict genetic outcome |
| Inbred | Brother x sister mated for a minimum of 20 generations |
| Hybrid | The mating between two inbred strains , which results in offspring |
| F Generation | Felio , or brother x sister |
| N Generation | The number of matings back to the parental stock |
