| A | B |
| Gregor Mendel | father of genetics |
| allele | synonym for gene |
| genetics | the study of how traits are inherited |
| dominant | form of a trait that appears to mask another form of the same trait |
| recessive | gene that is not expressed |
| Punnett square | tool used to predict results in Mendelian genetics |
| homologous | chromosomes that are the same shape, same size, and carry genes for the same traits |
| where genes are found | in a row on chromosomes |
| mutation | change in genetic material |
| nondisjunction | when homologous chromosomes fail to separate during meiosis |
| environment | influences the expression of genes |
| Watson and Crick | created model of DNA |
| nucleotide | repeating unit of DNA |
| the genetic code | sequence of bases |
| 2 functions of DNA | 1) replicate 2) direct ribosomes to make proteins |
| bond found between bases in DNA | weak hydrogen |
| sugar in DNA | deoxyribose |
| three parts of a nucleotide | sugar, phosphate, base |
| how the bases pair | A with T, C with G |
| original DNA used as a pattern to make more | template |