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OCR A Biology

Chromosome Section Breaks Mutations Joins Gene Single Gene/Sections

Front Chromosome mutations
Back
  • gene mutations in single gene/sections of DNA, CM affects whole chromosome, and caused by mutagens and occur during meiosis normally
  • Changes in chromosome structures include
    • deletion - section of chromosome breaks off and lost
    • duplication - sections get duplicated on chromosome
    • translocation - section of 1 chromosome breaks off and joins another non-homologous chromosome
    • inversion - section of chromosome breaks off, is reversed, and joins back onto chromosome

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