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| 9503565981 | Evolution | A change in populations that leads to a population becoming adapted to its environment |  | 0 |
| 9503565982 | Natural Selection | Environmental pressures sorting the winning alleles from the loser alleles. Organisms with winning alleles pass on their alleles to future generations. |  | 1 |
| 9503565983 | Variation | Small differences between individuals phenotype's. |  | 2 |
| 9503565984 | Genetic Variation | The variety of alleles in a gene pool. The wider the variety of alleles the wider the range of phenotype's in a population. Helps organisms survive environmental changes. |  | 3 |
| 9503565985 | Allele | Alternate forms of genes that encode for the same characteristic. Example A=Blue Eyes a=Brown Eyes |  | 4 |
| 9503565986 | Allele Frequency | measure of how common a certain allele is in the population. Successful alleles have a higher frequency. |  | 5 |
| 9503565987 | Fitness | Organism's with higher reproductive success have a higher fitness. |  | 6 |
| 9503565988 | Gene Pool | All the alleles in a population |  | 7 |
| 9503565989 | Speciation | The formation of two or more species through isolation of an ancestor population. The two sub populations become adapted to their respective environments and their gene pools change until the two sub-populations are not able to reproduce. |  | 8 |
| 9503565990 | Species | A group of individuals which can reproduce and their offspring are fertile. |  | 9 |
| 9503565991 | Genetic Drift | A change in the allele frequency of a population as a result of chance events rather than natural selection. Decreases Genetic Variation |  | 10 |
| 9503565992 | Gene Flow | The transfer of alleles from one population to another. Prevents Speciation and increases genetic variation of receiving population. |  | 11 |
| 9503565993 | It helps a species survive environmental changes. | Why is genetic variation important? | 12 | |
| 9503565994 | Environmental Pressures | Predators, Climate, competition for food or water. These things can kills organisms in their environment. | 13 | |
| 9503565995 | Adaptation | A characteristic that helps organisms survive environmental pressures in their environment. |  | 14 |
| 9503565996 | Phenotype | The physical or observable characteristics of an organism. |  | 15 |
| 9503565997 | Genotype | The genes that are inside an organisms DNA including the DNA that is masked by dominant genes. |  | 16 |
| 9503565998 | Phylogenetic Tree | A family tree that shows the evolutionary relationships thought to exist among groups of organisms |  | 17 |
| 9503566011 | Karyotype | A display of all homologous chromosome pairs. Used to detect genetic abnormalities like having extra chromosomes. |  | 18 |
| 9503566012 | Down Syndrome | Three chromosome at the 21st position. |  | 19 |
| 9503566023 | Hardy Weinberg Equilibrium | theory of a stable, nonevolving population in which frequency of alleles do not change; only occurs in large, isolated populations with random mating, no migration, and no natural selection or mutations. | 20 | |
| 9503566019 | Evolutionary Gradualism | The concept that species evolve slowly over longer periods of time. |  | 21 |
| 9503566024 | Dominant Allele Frequency | P | 22 | |
| 9503566025 | Recessive Allele Frequency | Q | 23 | |
| 9503566026 | Homozygous Dominant Frequency | P² | 24 | |
| 9503566027 | Homozygous Recessive Frequency | Q² | 25 | |
| 9503566028 | Heterozygous Dominant Frequency | 2PQ | 26 | |
| 9503566029 | Allele Frequency | How common an allele is in a gene pool | 27 | |
| 9503566030 | Genotype Frequency | How common a genotype is in a population. | 28 | |
| 9503566032 | Phylogeny | The science of making an evolutionary tree based on genetics, fossil records, and morphological structures. |  | 29 |
| 9503803497 | Bottle Neck Effect | A severe reduction in population size. This reduces genetic variation. |  | 30 |
| 9503808638 | Founders Effect | One a small sub-population goes off and starts a new colony. The new colony does not have the same genetic variation as the original colony. |  | 31 |
