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Reproduction/Change
Science vocabulary for Lesson 1, Chapter 2
Term | Definition |
---|---|
Chromosomes | Structures in the nucleus of a cell that controll the cell's activities |
Fertilization | The joining of a sperm cell and an egg cell |
Fertilized Egg | The cell that results when an egg cell and a sperm cell unite |
Pollination | Movement of pollen from a stamen to a pistil |
Gene | The section of a chromosome that controls a trait |
Recessive Gene | A gene whose expression is hidden by a dominant gene |
Dominant Gene | A gene that can prevent the expression of another gene |
Hybrid | An individual that has a dominant and a recessive gene for a trait |
Mutation | A permanent change in the structure of a gene or chromosome |
Selective Breeding | Breeding plants or animals with certain traits to produce offspring with those traits |