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Chapter 4 vocab

Science 9

TermDefinition
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
Created by: skyeball