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DNAProtein Synthesis
Replication
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DNA carries a code for proteins
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What are proteins used for?
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What are proteins used for?
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What are proteins used for?
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DNA
protein
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DNA
protein
Stays in nucleus
made byribosomes
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DNAmessenger
protein
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http://www.johnkyrk.com/DNAtranscription.html
1. One side of DNA is ‘transcribed’ to messenger RNA.
http://www.wisc-online.com/objects/ViewObject.aspx?ID=AP1302
2. Messenger RNA is ‘translated’ to make proteins.
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Replication: making copies of DNA so cell can divide into two new cells
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Replication in Prokaryotes
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Replication in Prokaryotes
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Replication in Eukaryotes
(they have a nucleus)
Mitosis
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Meiosis
This replication makesSperm or Egg cellsfor reproduction.Note they are all
different.
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Asexual reproduction No mixing of DNA
You get the same organism
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Sexual reproduction DNA is mixed to make new organism
Egg and Sperm
Plants
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Sexual reproduction DNA is mixed to make new organism
Egg and Sperm
Fungi
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Sexual reproduction DNA is mixed to make new organism
Egg and Sperm
Animals
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Sexual reproduction DNA is mixed to make new organism
Egg and Sperm
Humansare
Animals
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Some organisms reproduce in different ways for different reasons.
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Everything is fine.No reason to change.
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Everything is fine.No reason to change.
Tsunami or big waves.Coral is in pieces.
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Everything is fine.No reason to change.
Tsunami or big waves.Coral is in pieces.
Environment changes.Rapid evolution needed.