SECTION 4
Help!
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| changes in the DNA sequence that affect genetic information | mutations
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| gene ______ result from changes in a single _____. Chromosomal mutations involve changes in _____ chromosomes | mutations, gene, whole
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| mutations that affect one nucleotide are called _______ ___________ | point mutations
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| mutations that shift the reading frame of the code, every codon after that IS affected | frameshift mutations
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| loss of all or part of a chromosome | deletion
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| a segment of chromosome is duplicated | duplication
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| part of a chromosome is oriented in the reverse of its usual direction | inversion
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| part of one chromosome breaks off and attaches to another nonhomologous chromosome | translocation
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