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Vocab unit 4
Term | Definition |
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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 . |