| A | B |
|---|
| numerator | The number above the line in a fraction: The number of equal parts in a fractional amount. |
| denominator | The number below the line in a faraction: the number of equal parts in the whole. |
| chromosomes | Structures in the nucleus of a cell that control 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 | The movement of pollen frm a stamen to a pistil. |
| inherited | Passed to offspring from parents. |
| 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. |
| Gregor Mendel | The father of modern Genetics. |
| selective breeding | Breeding plants or animals with certain traits to produce offspring with those traits. |
