The central Dogma

The central Dogma
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Storyboard Description

Here Keith will teach you about dna stuff

Storyboard Text

  • I'm Kevin and I'm here to tell you about protein synthesis 
  • Helicase
  • The first part of protein synthesis is called translation. This is when DNA is split open by helicase and eventually made into messenger RNA
  • mRNA
  • After helicase splits the DNA, Primase leads polymerase in the right direction to be able to build an mRNA copy of the strand of DNA
  • polymerase
  • Ribosome
  • mRNA
  • Amino Acid
  • The next phase of this process is called translation where ribosomes read the mRNA and create a string of amino acids
  • Its not all puppies and butterflies though, mutations can occur, such as translocation, this is when a piece breaks off of a chromosome  and attaches onto another, this is usualy fine but it may cause autism. Which is quite a negative affect.
  • A duplication is when an extra copy of DNA is in the chromosome and it has a negative affect, down syndrome.
  • A chromosomal deletion is when a strand of DNA is lost. Small deletions aren't fatal but large ones almost always are.
  • an isochromosome is another type of mutation. This is when both legs of a chromosome are both short or both long rather than one of each. This is fine if its balanced but if unbalanced it causes partial or complete loss of the x chromosome. Which greatly harms sexual development
  • Visual next page
  • A chromosome inversion is when a piece of a chromosome is broken off, spun around and put back in. This can lower fertility, Which causes a lot of problems.
  • This piece of DNA broke off and it could either be in inversion or translocation
  • This is a copy of the other DNA due to duplication
  • This one is shorter than the other due to deletion or an isochromosome if it were a chromosome
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