| A | B |
|---|
| Testes | Male reproductive organs that produce sperm and male sex hormones |
| Genetics | The science that studies heredity |
| Genes | Locations on chromosomes that detect hereditary traits |
| Sex Chromosomes | A pair of chromosomesthat determines the sex of an individual |
| Heredity | the passing of traits from parent to offspring |
| Sperm | A reprodutive cell from a male parent |
| Pure | Refers to an organism or cell in which the pair of genes required to produce a trait |
| Hybrid | Refers to an organism or cell in which the genes for a trait are diffrent |
| DNA | Deoxyribonucleic acid- a lage molecule that contains the hereditary information of the cell and controls the cells activities. |
| Meiosis | Cell division that reduces the number of chromosomes by half to produce sex cells |
| Sex-Linked Genes | A gene that is carried only on the X sex chromsome |
| Dominant | Refers to the stronger of a pair of traits |
| Recessive | Refers to the weaker of a pair of traits |
| Ovaries | Female reproductive organs that produce eggs and a female sex hormone |
| Egg | A reproductive cell from a female parent |
| xx | Female |
| xy | Male |
| Fertilization | The joining of a sperm cell and a egg cell |
