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Transcript 
Chromosomal
Abnormalities
Deletion- Cri du Chat
Syndrome
Duplication- some
Down Syndrome
Inversion-not usually
harmful
Translocation-CML
Crossing Over
Exchange of portions of chromosomes during
Meiosis, allows for variety and shuffling of genes.
Translocation
• Philadelphia Chromosome- translocation
between 9 and 22- A fused gene occurs if the
translocation occurs between at a certain pointChronic Myelogenous Leukemia and other blood
cancers
Chromosomal Duplication
• Duplication- or repeat disorders
• Huntingtons Chorea- normal repeats 1-35 copies of
CAG, pathogenic- over 35 repeats
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