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History of genetics
Learn introductory genetics with Braimy- B.Sc agriculture
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a) Insertion sequence:

  • It is a mobile piece of DNA that is capable of inactivating a gene into which it inserts.
  • They are believed to be responsible for spontaneous gene mutation in bacteria and bacteriophage.
  • When this insertion sequence transposes, this direct repeat remain at the site of insertion in the host chromosome.

File:Insertion sequence.jpg - Wikimedia Commons

b) Transposons:

  • It is a DNA Segment capable of changing its location within or between the chromosome.
  • They are usually 2000 bp long and carry one or more genes unrelated to their transposability.

Sandwalk: Transposons: Part I

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