| A | B |
|---|
DNA,  | a double helix molecule |
| SUGARS, NITROGENOUS BASES, PHOSPHATES | components of DNA |
 | strands of tightly wound DNA |
| GENES | sections of a chromosome that carry the code for a particular trait |
| MENDELIAN GENETICS | explains how traits are passed on through generations |
| INHERITED TRAITS | traits expressed in genes |
| ACQUIRED TRAITS | practiced skills, injuries, traits acquired through environment |
| GENETIC ENGINEERING | manipulation of genetic code - for medicine, agriculture etc. |
| DOMINANT TRAIT | the form of the trait that masks or covers up the other form |
| RECESSIVE TRAIT | covered up when the dominant form of the trait is present |
| GENOTYPE | the genetic makeup of an organism |
| PHENOTYPE | the physical trait that shows up as a result of the genotype |
 | a tool used to predict genotype and phenotype of offspring |
 | father of genetics; pea plant experiments |
 | discovered that DNA was a strand of molecules in spiral form |
 | made double helix model of DNA |
| MUTATION | change in the genetic code |
| ADAPTATIONS | structures, functions, or behaviors that enable a species to survive. |
| EVIDENCE FOR EVOLUTION | fossil record, radiometric dating, genetic information, etc |
| NATURAL SELECTION | survival of those best able to survive |
| EXTINCT | species that can't survive changes in environment |
| ALLELES | the different forms a gene may have for a trait |
