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| Question | Answer |
| Inheritance | The transmission of genetic information from generation to generation |
| Chromosomes | Threads of DNA made up of strings of genes They come in pairs therefore DNA comes in pairs as well |
| Gene | A length of DNA that is he unit of heredity & codes for a specific protein |
| Allele | Two or more alternatve forms of a gene |
| Homozygous allele | When the alleles in a matching pair are the same |
| Heterozygous alleles | When the alleles in a matching pair are different |
| A dominant allele is always written as ...... | A capital letter |
| A recessive allele is always written as............... | The corresponding small letter (i.e. dominant = R so recessive = r) |
| Codominant alleles | A pair of alleles that both show the Phenotype ( e.g Blood groups) |
| Genotype | The alleles possessed by an organism |
| Phenotype | The characteristics of the organism |
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