GENE MUTATION = CHANGE TO NUCLEOTIDE BASES OR CHANGE TO SEQUENCE OF BASES ON A GENE
CHROMOSOME MUTATION = CHANGE IN STRUCTURE OR NUMBER OF WHOLE CHROMOSOMES
MUTAGENIC AGENTS = CAUSE MUTATIONS E.G. CHEMICALS, RADIATION
SUBSTITUTION = SWAPPING SINGLE BASES, NOT ALL CHANGE SEQUENCE OF AMINO ACIDS DUE TO DEGENERATE NATURE OF THE GENETIC CODE
DELETION/INSERTION = CAUSES FRAME SHIFT MUTATION SO CHANGES AMINO ACID SEQUENCE FROM THEN ON
POLYPLOIDY = 3 OR MORE WHOLE SETS OF CHROMOSOMES RATHER THAN USUAL 2
NON-DISJUNCTION = INDIVIDUAL HOMOLOGOUS PAIRS FAIL TO SEPARATE IN MEIOSIS RESULTING IN AN EXTRA OR ONE LESS CHROMOSOME THAN USUAL
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