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Chapter 4 vocab
Science 9
| Term | Definition |
|---|---|
| chromosome | a structure that carries genes |
| DNA (deoxyribonucleic acid) | molecule found in the nucleus that carries genetic information composed of Sugar, phospate and 4 different bases(guanine, cytosine, adenine, thymine)passes down for reproduction |
| Gene | segment of DNA located at the specific place at the chromosome that contains special information to produce proteins. |
| Gene mutation | a change in the specific order of A,G,C and T bases to make a particular gene |
| Gene therapy | different techniques to alter and change specific mutations genes to make them function narmally |
| Mutagen | substances or factors that can cause mutations in DNA |
| Negative mutation | a mutations that harms an organism or reduces the probability that organisms with the mutation can produce offsprings or survive in their environment |
| Neutral mutation | a mutation that does not affect the organism or does not increase or decrease the survival rate of that organism |
| nuleolus | a membrane free organelle that floats int he interior of the nucleus and makes ribosomes |
| nucleus | chem; the positively chaarged center part of an atom that contains protons and neutrons, in bio: an organelle that controls the functions within the cell |
| Positive mutation | a mutation that benefits an organism |
| Protein | essential materials required for the cell to carry out the the activities necessary for its survival |
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skyeball
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