| A | B |
|---|
| heredity | the passing of traits from parents to offspring |
| genetics | the scientific study of heredity |
| fertilization | the joining of a sperm and an egg |
| purebred | the offspring of many generations that have the same traits |
| F1 offspring | first generation from specific set of parents |
| F2 offspring | second generation from a specific set of parents |
| gene | the set of information that controls a trait; a segment of DNA on a chromosome that codes for a specific trait |
| alleles | the different forms of a gene |
| dominant allele | an allele whose trait always shows up in the organism when the allele is present |
| recessive allele | an allele that is masked when a dominant allele is present |
| hybrid | an organism that has two different alleles for a trait; an organism that is heterozygous for a particular trait |
| Gregor Mendel | priest whose experiments in the monastery garden revolutionized the study of heredity |
