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Vocab unit 4
| Term | Definition |
|---|---|
| Mitosis | The process by which a core is divided into two identical cells, each containing the same number and kind of the mother cell chromosomes . |
| Chromosome | threadlike strands of DNA and protein in a cell nucleus that carry the code to the characteristics of the cells of an organism. |
| Asexual reproduction | A type of reproduction in which a new organism is produced from one parent . |
| Sexual reproduction | A type of reproduction in which a new organism is produced by combining two parent sex cells . |
| Sperm | The reproductive cell or gamete of the male parent produced in the testicles . |
| Egg | In organisms that reproduce sexually , the sex cell ( gamete ) of the parent female. |
| Meiosis | A division of the cell nucleus to produce sex cells ( gametes ) . |
| Fertilization | In organisms that reproduce sexually, the fusion of an egg and sperm ( gametes ). |
| Zygote | In sexually reproducing organisms , the cell formed by fertilization . |
| DNA | Deoxyribonucleic acid, a chemical in the cell nucleus that information and stores the genetic code , consists of stands of molecules that control the activity of cells , using coded instructions . |
| Gene | The segment of DNA on a chromosome that directs the making of a specific protein , thereby controlling the traits are passed to offspring . |
| RNA | ribonucleic acid, carries codes for protein production . |
| Mutation | Any permanent change in the genetic material bodies . |