| A | B |
|---|
| recombination | the additional mixing of genetic material from a sperm and egg which results in a unique combination of genes |
| sex cell | an egg (female) or a sperm (male) |
| sexual reproduction | involves two parents and results in offspring that have some genetic material (DNA) from each parent |
| species | a group of organisms that share certain characeristics and can mate with one another, producing fertile offspring |
| sperm | the male sex cell |
| testes | the male reproductive organ that produces sperm and the hormone testosterone |
| testosterone | a hormone, produced in the testes, associated with male sexual development and reproduction |
| uterus | the organ, in female animals, where the embryo develops into a fetus |
| zygote | the cell that results from the joining of the egg and sperm |
