| A | B |
|---|
| mitosis | the process by which a cell nucleus splits |
| chromosomes | structures in the nuclues that contain DNA |
| asexual reproduction | new cells produced from one parent |
| sexual reproduction | new cells produced from two parents |
| sperm | male parent sex cell |
| egg | female parent sex cell |
| meiosis | sex cell division |
| fertilization | joining of an egg and a sperm cell |
| zygote | cell formed in fertilization |
| DNA | controls the activities of cells with coded instructions |
| RNA | contains the codes for making protein |
| gene | a section of DNA that has directions for making specific protein |
| mutation | any permanent change in a gene or chromosome of a cell |
| transgenic organisms | organisms that contain genetic information from another species |
