| A | B |
|---|
| genetics | the study of heredity |
| heredity | the passing of traits from parent to offspring |
| Gregor Mendel | father of genetics |
| purebred | organism with only dominant alleles |
| hybrid | organism carrying dominant and recessive alleles |
| F1 generation | first generation; cross of two parent organisms |
| F2 generation | second generation; cross between offspring of F1 generation |
| traits | characteristics that can be passed from parent to offspring |
| alleles | different versions of the gene carried on chromosomes |
| dominant trait | trait that is always expressed if present |
| recessive trait | trait that can be masked and only shows if alleles are matching |
| genotype | an organism's genetic make-up or allele combinations |
| phenotype | physical characteristics of an organism |
| homozygous | two identical alleles |
| heterzygous | tow different alleles |
| Punnett square | diagram demonstrating probability that might result from a genetic cross |
