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AS unit 3
| Term | Definition |
|---|---|
| cell | the basic unit of life |
| chromosome | a strand of genetic material that contains genetic code |
| crossbreeding | the breeding of two different pure breeds |
| gene | a unit of inheritance composed of DNA |
| genetics | the study of heredity |
| genotype | genetic makeup of an animal |
| heredity | the passing of traits from parents to offspring |
| phenotype | the outward expression of a gene |
| purebred breeding | the breeding of animals within the same breed |
| reproduction | process by which new organisms are derived normally involving the union of the male and female sex cells |