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| Term | Definition |
|---|---|
| Nucleus | consists of a double nuclear envelope; nuclear pores, which control the movement of substances between the nucleus and cytoplasm; nucleoli, which produce ribosomes; and genes arranged on chromosomes, which control cellular structure and direct cellular activities. |
| Human somatic cells | have 46 chromosomes, 23 inherited from each parent. The total genetic information carried in a cell or an organism is its genome. |
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