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science 9 unit 2 voc
| Question | Answer |
|---|---|
| chromosome | a thread-like structure in a cell that carries genes. |
| DNA (deoxyribonucleic acid) | Deoxyribonucleic acid is a molecule that carries all the information about are bodies and is made up of sugar and phosphate. |
| gene | a piece of dna that is located at the end of chromosomes, each contain info to produce protein. |
| gene mutation | a change in the order of what makes up a particular gene. |
| gene therapy | techniques that alter a bad gene to work again |
| mutagen | substances that can cause dna mutation |
| negative mutation | a mutation that harms the organism or stops it from producing offspring |
| neutral mutation | a mutation that has no effect on the organism |
| nucleolus | a membrane free organelle that floats in the cell and makes ribosomes |
| nucleus | controls all the activities in a cell |
| positive mutation | a mutation that benefits an organism |
| protein | materials that help the cell carry out activities for its survival |
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