Transcript dna presentation

Translating the code
.
Translating the code
• Step 1
• 1st step is the “unzip” between its base
pairs.
• Cyotosine --> guanine
• Uracil --> adenine
Step 2
• Messenger RNA leaves the nucleus and
enters the cytoplasm.
• Attaches to the ribosome and provides
the code for the protein (chain)
molecule that will form.
• Ribosome moves along messenger
RNA.
Step 3
• Transfer RNA attaches to Messenger RNA
• Carry specific amino acids to the ribosome.
• Their they “read” the information by matching
up with 3 letter codes of bases.
• The chain grows after each amino acid is
attatch.
Step 4
• Protein production continues.
• Grows until it reaches its 3 letter code.
• Then the ribosome releases the
completed protein.
• http://www.cleanvideosearch.com/medi
a/action/yt/watch?videoId=B6O6uRb1D
38
Mutations
• Can cause a cell to produce an
incorrect protein during protein
synthesis.
• As a result, the organism’s trait, or
phenotype, may be different from what it
normally would have been.
• Body cell- mutations can’t be passed on
• Sex cell- can be passed on.
Types of mutations
• Some mutations are helpful or harmful.
• White Lemur mutation- will make it more
visible to predators.
• Bacteria- antibiotics help bacteria after
awhile, allow them to become resistant
to it.