| A | B |
|---|
| Evolution | a gradual change overtime by natural selection |
| Adaptations | traits that help an organism survive & reproduce |
| Example of adaptation | polar bear has white fur blends in |
| Natural Selection | Organisms with good & helpful traits survive! |
| Overproduction | each species create MORE offspring than can survive (not enough living space or food) |
| Survival of the fittest | variations make individuals better suited for living and are more likely to survive (camoflauge to hide from predators or fast to run away) |
| Fossilization | dead organisms are preserved in rock |
| The oldest fossils are found on (top or bottom) of sedimentary rock layers | bottom |
| The most complex (younger) fossils are found on the | top |
| Camoflauge is | an adaptation to blend into surroundings to avoid predators |
| Homologous structures | evidence that can show a common ancester between organisms |
| Punnett Square | tool to cross the genes of parents (the boxes) |
| A capital and lower case letter | HYBRID (always shows dominant trait) |
| Phenotype | What it LOOKS like |
| Only way to get recessive trait | TWO lower case letters |
| Male (baby boy) | X from egg and Y from sperm |
| Generations | Each level of a pedigree chart |
| Carrier | They can pass on trait but do not have it |
| Normal Male | XY |
| Infected male | The X has the trait |
| Traits are determined by | Genes |
| Boys inherit sex (X) linked diseases from | mother |
| Genotype | gene make up (2 LETTERS) |
