click below
click below
Normal Size Small Size show me how
4.1 science vocab
chapter 4 science
| Term | Definition |
|---|---|
| heredity | the passing of physical characteristics from parents to offspring |
| trait | each different form of a characteristic |
| genetics | the scientific study of heredity |
| fertilization | a new organism begins to form when eggs and sperm join |
| purebred | organism is the offspring of many generations that have the same trait |
| gene | the factors that control a trait |
| alleles | the different forms of gene |
| dominant allele | one whose trait always shows up in the organism when the allele is present |
| recessive allele | is hidden whenever the dominant allele is present |
| hybrid | organism has two different alleles for a trait |