Chromosomal Alterations Comic

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  • Hello students. My name is Mr. Macalaster and today we will be discussing the 4 kinds of chromosomal alterations
  • Deletion
  • Deletion is where a part of the chromosome, for whatever reason, is lost. This is very serious since certain important genes may have been on that lost fragment.
  • Duplication is where certain genes of a chromosome are replicated. This can actually be beneficial since it could provide the resources for new, useful genes to be created.
  • Duplication
  • Inversion
  • Inversion is where a part of the chromosome breaks off and reattaches in reverse order. This is not that serious since all the genes are still present, but just in reverse order.
  • Translocation is when a part of a chromosome attaches to a part of a nonhomologous chromosome. Pictured above is a special type of translocation called reciprocal translocation since both chromosomes switch genes. This type of chromsomal alteration is what causes leukemia.
  • Translocation
  • And those are all the kinds of chromsomal alterations there are. I hope you learned something and enjoyed. Thanks for reading.
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