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4.1 science vocab.
Term | Definition |
---|---|
heredity | the passing of physical characteristics from parent to offsprings |
trait | a characteristic that an organism can pass on to its offspring through its gene |
genetics | the scientific study of heredity |
fertilization | a new organism begins to form when egg and sperm join |
purebred | the offspring of many generations that have the same trait |
gene | the factors that control a trait |
alleles | the different forms of a gene |
dominant allele | one whose trait always shows up in the organism when the allele is present |
recessive allele | hidden whenever the dominant allele is present |
hybrid | an organism that has two different alleles for a trait |