| Term | Definition |
|---|
| zygote | a fertilized egg, formed by joined parent cells |
| gametes | reproductive cells, have only half the number of chromosomes as body cells |
| asexual reproduction | one reproduction process in which there is no joining of cells from different parents |
| sexual reproduction | one reproduction process in which two cells join together |
| chromosomes | a threadlike structure in the nucleus |
| mitosis | the process in which most cells divide |
| DNA | a complex chemical which carries a code in its structure; chromosomes are made up of this |
| 23 chromosomes | How much chromosomes do human gametes have? |
| 46 Chromosomes | How much chromosomes does a human cell have? |
| life cycle | the stages of an organism's life |
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